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  • i
    i
    the imaginary number .
  • I
    I
    noun
    the ninth letter of the English alphabet, a vowel.
  • i-
    i-
    variant of y-.
  • i.
    i.
    abbreviation
    imperator.
  • -i-
    -i-
    the typical ending of the first element of compounds of Latin words, as -o- is of Greek words, but often used in English with a first element of any origin, if the second element is of Latin origin.
  • I.
    I.
    abbreviation
    Independent.
  • -i
    -i
    suffix
    of or relating to a region or people, esp of the Middle East
Synonyms

i

1 American  
Mathematics.
  1. Also called imaginary unit.  the imaginary number .

  2. a unit vector on the x -axis of a coordinate system.


I 2 American  
[ahy] / aɪ /
Or i

noun

I's, plural Is, plural i's, plural is plural
  1. the ninth letter of the English alphabet, a vowel.

  2. any spoken sound represented by the letter I or i, as in big, nice, or ski.

  3. something having the shape of an I.

  4. a written or printed representation of the letter I or i.

  5. a device, as a printer's type, for reproducing the letter I or i.


I 3 American  
[ahy] / aɪ /

pronoun

we, plural nominative me, objective us, objective my, possessive mine, possessive our, possessive ours possessive
  1. the nominative singular pronoun, used in referring to oneself, the person speaking, writing, or otherwise communicating.


noun

I's plural
  1. (used to denote the narrator of a literary work written in the first person singular.)

  2. Metaphysics. the ego.

I 4 American  

abbreviation

  1. interstate (used with a number to designate an interstate highway).

    I-95.


I 5 American  
Symbol.
  1. the ninth in order or in a series.

  2. (sometimes lowercase) the Roman numeral for 1.

  3. Chemistry. iodine.

  4. Biochemistry. isoleucine.

  5. Electricity. current.

  6. Logic. particular affirmative.

  7. (italics) isotopic spin.


i- 6 American  
  1. variant of y-.


i. 7 American  

abbreviation

  1. imperator.

  2. incisor.

  3. interest.

  4. intransitive.

  5. island.

  6. isle; isles.


-i- 8 American  
  1. the typical ending of the first element of compounds of Latin words, as -o- is of Greek words, but often used in English with a first element of any origin, if the second element is of Latin origin.

    cuneiform; Frenchify.


I. 9 American  

abbreviation

  1. Independent.

  2. Island; Islands.

  3. Isle; Isles.


I 1 British  
/ aɪ /

pronoun

  1. (subjective) refers to the speaker or writer

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

I 2 British  

symbol

  1. chem iodine

  2. physics current

  3. physics isospin

  4. logic a particular affirmative categorial statement, such as some men are married, often symbolized as SiP Compare A E O 1

  5. one See Roman numerals

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

abbreviation

  1. Italy (international car registration)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
I. 3 British  

abbreviation

  1. International

  2. Island or Isle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

-i- 4 British  
  1. used between elements in a compound word Compare -o-

    cuneiform

    coniferous

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

i 5 British  
/ aɪ /

noun

  1. the ninth letter and third vowel of the modern English alphabet

  2. any of several speech sounds represented by this letter, in English as in bite or hit

    1. something shaped like an I

    2. ( in combination )

      an I-beam

  3. to pay meticulous attention to detail

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

-i 6 British  

suffix

  1. of or relating to a region or people, esp of the Middle East

    Iraqi

    Bangladeshi

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

i 7 British  

symbol

  1. Also called: j.  the imaginary number √–1

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

i Scientific  
/ ī /
  1. The number whose square is equal to −1. Numbers expressed in terms of i are called imaginary or complex numbers.


i Idioms  

Grammar

See me.

Other Word Forms

Noun Inflected Forms

Etymology

Origin of I

First recorded before 900; Middle English ik, ich, i, Old English ic, ih; cognate with Gothic ik, German ich, Old Norse ek, Latin ego, Greek egṓ, Old Church Slavonic azŭ, Lithuanian aš, Sanskrit ahám

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Seven & i Holdings 3382 -0.05%decrease; down pointing triangle raised its annual guidance after the war-driven surge in gasoline prices boosted earnings at its North American convenience-store business, sending quarterly net profit higher.

From The Wall Street Journal Jul. 9, 2026

YouTube surpassed Netflix in average daily viewing time in 2025, according to research firm Digital i cited in TechCrunch.

From Barron's Jul. 7, 2026

Anonymous BBC staff tell the i Paper of their frustration with the corporation's latest cuts, as part of its plans to save £500m.

From BBC Jun. 18, 2026

The i newspaper, which first reported the story, said it was found behind a ceiling panel within the last two months, and security services have been informed.

From BBC Jun. 9, 2026

He stops at a door marked gene therapy room i.

From "Allegiant" by Veronica Roth

“I don’t think I want any of them. Let it be God’s will. We’re going to New York and then we’ll figure out who needs to come.”

From Los Angeles Times Jul. 15, 2026

"I'm a football coach and I try to demand the very best and not settle for lower standards," said Tuchel, brushing aside any suggestion of tension inside the camp.

From BBC Jul. 15, 2026

I made the reservation on the PS website more than a week before my flight, providing flight and credit card information.

From The Wall Street Journal Jul. 15, 2026

“There was some talk that our defense and goalkeeping weren’t up to par. But I think we’ve silenced a lot of critics,” Cubarsí said.

From Los Angeles Times Jul. 15, 2026

I reach up, hugging her neck, feeling her long, furry face against my cheek.

From "Will’s Race for Home" by Jewell Parker Rhodes

Yet that doesn't make its turnaround solely the work of one heavily stubbled mastermind, who saved a company through his singular vision, taste and liberal use of the i- prefix.

From The Guardian Jan. 25, 2011

But it wasn't until Cipla came out with the i- pill in 2007, marketing it to modern young women through television and magazine advertising, that women took to it.

From Time May 26, 2010

On another occasion, however, she exercised towards a family whose pretensions had been viewed by her-354--vol i- father with peculiar dread and hostility, a degree of forbearance which had in it somewhat of magnanimity.

From Memoirs of the Court of Queen Elizabeth by Aikin, Lucy

But there mingled in the bosom of the high-born Sussex an illiberal disdain of the-400--vol i- origin of Dudley, with a just abhorrence of his character and conduct.

From Memoirs of the Court of Queen Elizabeth by Aikin, Lucy

How tame, how puerile, in the midst of sentiments serious and profound as these, would have appeared-252--vol i- the intrusion of classical imagery, however graceful in itself or ingenious in its application!

From Memoirs of the Court of Queen Elizabeth by Aikin, Lucy

And a lot of people, not just the Gilbreths, were very worried that the “best women” i. e. highly educated women were not reproducing.

From Scientific American Sep. 21, 2023

Properties i. and ii. say that line integrals are linear, which is true of single-variable integrals as well.

From Textbooks Mar. 30, 2016

For each of the following functions, determine the i. domain and ii. range.

From Textbooks Mar. 30, 2016

Within minutes, I got my answer: “@sethporges yes. my girlfriend cathy and i. and i used to do puppet shows.”

From Forbes Jun. 26, 2012

See, too, Grotius De Jure, i. cap. ii.521.See an admirable dissertation on the opinions of the early Christians about military service, in Le Blant, Inscriptions chrétiennes de la Gaule, tome i. pp. 81-87.

From History of European Morals From Augustus to Charlemagne (Vol. 2 of 2) by Lecky, William Edward Hartpole

It may be a connecting sound, like the -i- in nacht-i-gale.

From A Handbook of the English Language by Latham, R. G. (Robert Gordon)

The concord of the 4th prefix, Mi-, is gi-, -i-, -ji-, and sometimes -mi-.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" by Various

Born in Oregon to Taiwanese immigrants, Wang is herself a beneficiary of the doctrine she defended during the historic oral argument—as am I. Following the argument, interest in her background exploded.

From Slate May 26, 2026

Nearly five million Americans served in uniform during World War I. After the war, the U.S. drew down the Army to a minimal level and kept it there for two decades.

From The Wall Street Journal Apr. 28, 2026

Guy Fieri didn’t know about it, and neither did I. Oh no, he did.

From Los Angeles Times Apr. 26, 2026

In a recent study, Purusharth I. Rajyaguru and colleagues used Saccharomyces cerevisiae, a type of yeast commonly used in research, to explore how life might respond to Mars-like stress.

From Science Daily Apr. 12, 2026

New York City’s mayor Edward I. Koch wrote him a letter trying to convince him to come back to the chessboard.

From "Endgame" by Frank Brady

Then, when you get to the step where you’re actually running the check-backup command, add -i ~/Downloads/pegasus.stix2 into the option section.

From The Verge Jul. 21, 2021

Singular masculine words end in -us, plurals end in -i.

From The Guardian Jun. 11, 2010

I E -i formed abstracts and nouns of agency; I E ar go; Min ari, way, track, trail.

From The Dakotan Languages, and Their Relations to Other Languages by Williamson, A. W. (Andrew Woods)

Thus final -o bespeaks a noun; -a, an adjective; -e, an adverb; -i, an infinitive, etc.

From International Language Past, Present and Future: With Specimens of Esperanto and Grammar by Clark, Walter John

If not a few Bantu languages, the verb used in a negative sense changes its terminal -a to -i.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" by Various

The company taking the top spot on Gauntlet I’s leaderboard External link was Skycutter, a British startup that partnered with Ukrainian drone company SkyFall.

From Barron's Apr. 28, 2026

They include everything from sketches of Apple logos to the bench and desk of the Apple I’s presentation at the Homebrew Computer Club a half-century ago.

From The Wall Street Journal Apr. 3, 2026

“I don’t carry beef with people. And I’m not going to get into the history of Doc and I’s relationship right now. And I probably won’t ever. He’s fine in my book.”

From Los Angeles Times Oct. 10, 2024

“I think what we need to focus on now is getting all the T’s crossed, all the I’s dotted,” Nemes said.

From Seattle Times Jan. 4, 2024

Demi felt his back, as if expecting to find it like that of the watch, and then gravely remarked, “I dess Dod does it when I’s asleep.”

From "Little Women" by Louisa May Alcott

Is there any way you can increase your income?

From MarketWatch Jul. 14, 2026

Is it possible, many have wondered, to foresee when and where a bluff might collapse — and perhaps even turn these predictions into early warning alerts?

From Los Angeles Times Jul. 14, 2026

Is it time to talk about mandatory retirement ages?

From Slate Jul. 13, 2026

Is it still about winning championships—or can you take satisfaction from where you are now?

From The Wall Street Journal Jul. 11, 2026

“I’d love to show you around. Is there anything you’re particularly interested in?”

From "The Red Car to Hollywood" by Jennie Liu

"I had really dotted all the i's and crossed all the t's of the experiment," he said.

From Science Daily May 18, 2026

So homeowners, dot the i’s and cross the t’s when you sell—and be ready to show your work.

From The Wall Street Journal Mar. 6, 2026

A Japanese company of Seven & i's size has never been bought by a firm from overseas.

From BBC Oct. 8, 2024

They want to make sure they're dotting all the i's and crossing all the t's, to make sure these are the correct identifications.

From Salon Oct. 17, 2023

I’ve won the writing prize twice, and I would have this week, too, but I decided to leave some i’s undotted.

From "In the Time of the Butterflies" by Julia Alvarez

“On balance, we continue to forecast three 25bp rate hikes over the coming months, somewhat faster and further policy tightening than is currently discounted in the money market,” Goltermann said.

From The Wall Street Journal Jul. 15, 2026

“The thing is, I never subscribed. America can be a One Eyed Jack, but I’ve seen your other side.”

From Los Angeles Times Jul. 15, 2026

"You can do this" is the Daily Mirror's pep-talk headline, embedding a photo of captain Harry Kane and star goal scorer Jude Bellingham, head to head, energetically revving each other up.

From BBC Jul. 15, 2026

Fiscal policy is unlikely to deliver major support in the second half of the year unless economic growth slips toward 4.0%-4.2% in 2026, Loo told clients in a note last week.

From The Wall Street Journal Jul. 15, 2026

On November 29, the artists arrive at Chirun Port in Taiwan, which is under Japanese rule.

From "At Last She Stood" by Erin Entrada Kelly

“I said we deserve the right to look at other options,” Preciado recalled from his office, which was festooned with awards.

From The Wall Street Journal Jul. 15, 2026

She added, “It’s really fun to go shopping for a human skull and a Ronettes record in the same day, and we get to do that with our band.”

From Los Angeles Times Jul. 15, 2026

"We're not going to be able to put out the amount of content at the speed that we were… or anything approaching that," she says.

From BBC Jul. 15, 2026

“Today we were informed that Charley Crockett has decided to remove Twin Temple from his upcoming shows next week due to our Satanic imagery,” the musicians wrote on Instagram last week.

From Los Angeles Times Jul. 15, 2026

Looking about us, all we see is miles of debris from hastily left sites.

From "Will’s Race for Home" by Jewell Parker Rhodes

“Twin Temple, Would you like to open my show in L.A. on September 29th at the Hollywood Palladium? Let me know,” White posted on Friday, adding, “Get in front of me Satan!”

From Los Angeles Times Jul. 15, 2026

A welcome note told me the exact time to be ready to depart for my flight.

From The Wall Street Journal Jul. 15, 2026

“I’m very grateful to Mayor Bass for giving me the opportunity to be part of her team and serve the people of Los Angeles,” Lee said in a statement Tuesday.

From Los Angeles Times Jul. 15, 2026

"Each step brought me closer to where I ultimately wanted to be, even if the path wasn't always linear," says the 32-year-old.

From BBC Jul. 14, 2026

“Please,” insists Caesar gently, “you’d be doing me a great favor as a fellow soldier.”

From "Will’s Race for Home" by Jewell Parker Rhodes

"The biggest thing he taught us was his desire, and his drive and ambition to be the absolute best and to win every single game. His competitive mindset was so clear."

From BBC Jul. 14, 2026

“I’m confident that ICE is well trained in vehicle stops and you’re going to see us keep moving forward.”

From Los Angeles Times Jul. 14, 2026

“There was so little risk in China showing us, because the West doesn’t build,” Hichwa said.

From The Wall Street Journal Jul. 14, 2026

"For some of us, those threats have come very close, and all of us live with the knowledge that they may again materialize," Kagan, a liberal justice, told lawmakers in the House hearing.

From Barron's Jul. 14, 2026

When Dad told us about Candace, he assured us that they were careful about where they went and how late they stayed out.

From "Split the Sky" by Marie Arnold

Knowing as a father that could have been me, could have been friends of mine, I felt very connected to those people.

From Los Angeles Times Jul. 14, 2026

De Beers announced Monday it will pause production at South Africa's largest diamond mine for two years to reduce costs while trading conditions remained tough.

From Barron's Jul. 13, 2026

UBS reckons the giant miner could be looking to complement its organic growth plans in lithium, aluminum and iron ore, as it ramps up recent copper projects such as the Oyu Tolgoi mine expansion.

From The Wall Street Journal Jul. 10, 2026

A news quiz that will satisfy your competitive streak: See if you can beat a Slate senior producer’s score—or mine!

From Slate Jul. 10, 2026

Zara jumps up from her place at the table, two gold medals swinging around her neck, hers and mine.

From "Red Flags and Butterflies" by Sheryl Azzam

"I was in a mixed feeling. I have it completely out of my system. We framed it. We debriefed it as a group and we're all focused now. Full steam ahead."

From BBC Jul. 15, 2026

A welcome note told me the exact time to be ready to depart for my flight.

From The Wall Street Journal Jul. 15, 2026

“Twin Temple, Would you like to open my show in L.A. on September 29th at the Hollywood Palladium? Let me know,” White posted on Friday, adding, “Get in front of me Satan!”

From Los Angeles Times Jul. 15, 2026

"Does it mean me? Does it mean them? Does it mean my project? Does it mean my studio?"

From BBC Jul. 15, 2026

“Be mad at me, George. This is my fault. My injury distracted you.”

From "Will’s Race for Home" by Jewell Parker Rhodes

“There was some talk that our defense and goalkeeping weren’t up to par. But I think we’ve silenced a lot of critics,” Cubarsí said.

From Los Angeles Times Jul. 15, 2026

“I don’t see prominent excesses, and our economy feels pretty good,” he says.

From The Wall Street Journal Jul. 15, 2026

“Today we were informed that Charley Crockett has decided to remove Twin Temple from his upcoming shows next week due to our Satanic imagery,” the musicians wrote on Instagram last week.

From Los Angeles Times Jul. 15, 2026

"England is our big brother, and sometimes you don't want your big brother to do well, do you?"

From BBC Jul. 14, 2026

With Caesar, our adventure will be daring, startling!

From "Will’s Race for Home" by Jewell Parker Rhodes

Ideally, I need to get to $250,000 to buy a modest apartment so my kid can have a place that is ours and has no debt associated with it.

From MarketWatch Jul. 14, 2026

"Each time that the other party has failed to meet its obligations, we did not uphold ours," he added.

From Barron's Jul. 13, 2026

Ellis' granddaughter Laura Enston welcomed the news and said: "The shadow of Ruth's execution has fallen across two generations. We have carried shame that was never ours to bear."

From BBC Jul. 8, 2026

That year, a million people gathered on the National Mall to witness an historic fireworks display, while we, in our little corner of the world, enjoyed ours.

From Salon Jul. 3, 2026

I was never going back to that work, but if this was true, then those I’d left behind and all who worked for masters like ours were truly on their own.

From "Flying Through Water" by Mamle Wolo

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