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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  

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 2 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 3 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 4 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. 5 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- 6 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 7 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 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:

The latest allegations will "escalate the row" with the Palace, the i Paper says.

From BBC Sep. 17, 2026

The deal would mark Couche-Tard’s largest-ever acquisition after it abandoned a $47 billion takeover attempt of Seven & i, the Japanese owner of 7-Eleven, last year.

From The Wall Street Journal Sep. 1, 2026

David Zwirner presents Roy DeCarava’s “the sound i saw,” bringing together photographs taken in the late 1940s and 1960s.

From Los Angeles Times Sep. 1, 2026

The Sussexes will fly back to the UK without a deal for taxpayer funded security, the i Paper reports.

From BBC Aug. 21, 2026

Olly: i need you to be safe, i don’t want to lose you Madeline: You barely have me!

From "Everything, Everything" by Nicola Yoon

I had not grated cheese into a saucepan.

From Salon Sep. 20, 2026

I made that pasta when everyone else did, and kept making it after everyone stopped posting about it.

From Salon Sep. 20, 2026

Bio Orto makes an organic butternut-squash cream sauce that I bought at Eataly for $18.49 and desperately wanted to find merely fine.

From Salon Sep. 20, 2026

Looking back, I suspect my father had recently begun making a little more money, because that afternoon we bought two things I distinctly remember never having had before: Kerrygold butter and a jar of Rao’s.

From Salon Sep. 20, 2026

Falling stars, rising flames, flying sparks, Father and I are in new territory.

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

Concerning that point indeed, my Sturmius, I have nothing certain to write to you, nor does any one truly-101--vol i- know what to judge.

From Memoirs of the Court of Queen Elizabeth by Lucy Aikin

And she would frequently assure them that she would take a particular care of their affairs, and she would-277--vol i- ever be as good as her word.

From Memoirs of the Court of Queen Elizabeth by Lucy Aikin

Mary received her in her chamber, to which she had now confined herself in expectation of that joyful-192--vol i- event which was destined never to arrive.

From Memoirs of the Court of Queen Elizabeth by Lucy Aikin

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

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

From Textbooks Mar. 30, 2016

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

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

Green, J. R.: History of the English Peoples, vols. i. and iv.

From Boy Labour and Apprenticeship by Reginald Arthur Bray

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

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

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

He told me he is not seeing other people, and neither am I. Every year he goes to Mexico for six months.

From MarketWatch Sep. 19, 2026

Pearl diving has all but disappeared, particularly after the mass production of cultured pearls on farms after World War I. In Gulf countries, the extinction of this profession converges with a familiar story.

From The Wall Street Journal Aug. 6, 2026

I’ve been a huge Robyn fan for most of my life — she’s kind of a north star for my sisters and I. It’s no secret that we love sad dance songs.

From Los Angeles Times Jun. 18, 2026

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

We were the talk of the ship, even Louise and Beatrice and I. Being, as we were, Cranstons ourselves.

From "Secrets at Sea" by Richard Peck

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

Nouns ending in -a, -e, -i, -y, -o, -l, -n, -t, -ar, -ur, -ŭs are Neuter.

From New Latin Grammar by Charles E. (Charles Edwin) Bennett

Tarsus -i: the foot; the jointed appendage attached at the apex of tibia. bearing the claws and pulvilli.

From Explanation of Terms Used in Entomology by John. B. Smith

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 A. W. (Andrew Woods) Williamson

Judges were unmoved that Luitpold’s forebears had brewed in the region since 1260, written the purity law and invented Oktoberfest for his great-great-grandfather King Ludwig I’s 1810 wedding.

From The Wall Street Journal Sep. 7, 2026

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

Another important part of Victor I's legacy was to introduce Latin as the common language of the Catholic Church.

From BBC Apr. 28, 2025

“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 ain’t never been away from Mama afore so I’s scared to death, kept thinking they waren’t never gunn bring me back.”

From "Elijah of Buxton" by Christopher Paul Curtis

Appeared in the September 19, 2026, print edition as 'German Military Rebuild Is Rattling Its Neighbors'.

From The Wall Street Journal Sep. 19, 2026

"Is he going to do anything about it? No," he added.

From BBC Sep. 18, 2026

Among his early hits were “Up Your Speed” and “Little Derek,” from his debut alum, “This Is My Demo,” which he released from his own label, Dcypha Productions.

From Los Angeles Times Sep. 18, 2026

Is the publication primarily funded by rents raised from the office building?

From Slate Sep. 18, 2026

“My guess is the loveless souls go to Pain. Is that right?”

From "The Undead Fox of Deadwood Forest" by Aubrey Hartman

"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

I care that you dot your i’s, you cross your t’s, that if you say you’re going to do something, you do it.

From The Wall Street Journal Mar. 12, 2026

“I know sometimes people feel like, why hasn’t there been more information? But again, just trying to make sure we have i’s dotted and t’s crossed.”

From Los Angeles Times Feb. 26, 2025

The i's Anna Bonet added Intermezzo is "mature and profound and feels like a culmination of everything she has done before".

From BBC Sep. 23, 2024

I recognized your tiny handwriting right away, all wobbly and with those weird loops you put on top of your t's and i's.

From "When You Reach Me" by Rebecca Stead

The Black Death is best known for the catastrophic wave of plague that swept through Europe between 1347 and 1353, killing millions of people.

From Science Daily Sep. 20, 2026

The kidney findings could also help researchers investigate why lipid accumulation is a normal physiological feature in some situations but is associated with disease in others.

From Science Daily Sep. 20, 2026

The technology is still at the proof-of-concept stage.

From Science Daily Sep. 20, 2026

According to Wu, their emitted light is roughly 150 times brighter than that of upconversion nanoparticles that have not been dye-sensitized.

From Science Daily Sep. 20, 2026

She finds work as a secretary to a vice president at a big bank, then becomes a librarian at an engineering company, where she is paid a decent salary for the first time.

From "At Last She Stood" by Erin Entrada Kelly

"That's how we showed that this core-shell-shell structure could actually function as a one-directional energy tunnel for incoming light."

From Science Daily Sep. 20, 2026

This was one of two dinners I could reliably expect when we visited her in West Virginia.

From Salon Sep. 20, 2026

“Even though this is the AI economy,” Stovall said, we “have yet to figure out” how to tele-transport Amazon packages.

From MarketWatch Sep. 20, 2026

“The challenges for the car industry are immense, but our strategy gives a clear answer to how we adapt to these,” Samuelsson said.

From The Wall Street Journal Sep. 20, 2026

If we don’t make it, there’s no money back, and for the first time, I realize how awful it would be to return home, exhausted, broke.

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

If the sauce needs nothing from me, I can spend that energy making dessert, mixing a cocktail for guests, warming bread — or simply deciding which sparkling water sounds good.

From Salon Sep. 20, 2026

But it doesn’t make me uncomfortable, because I’m responsive to all my constituents, whether I do exactly what they want or not.

From Los Angeles Times Sep. 20, 2026

"We should have a model where we have broader people elected to it who can feed in all those issues into a Yorkshire-wide parliament. That, to me, is only a good thing," he said.

From BBC Sep. 20, 2026

But what really struck me was that behind the obsession is a genuine community of people who actually know each other.

From The Wall Street Journal Sep. 20, 2026

His self-satisfied expression makes me recall how people, more than exhaustion, cold nights, and hot days, made the land rush horrible and desperate.

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

Dinner for two at a neighborhood trattoria recently ran us $86 with appetizers, one cocktail and no dessert.

From Salon Sep. 20, 2026

In fact, they show just how hard it is to be sure what’s going on—and should make us question confident predictions of what’s going to happen next.

From The Wall Street Journal Sep. 20, 2026

“Give us another chance,” Vance said on the All-In Podcast.

From Los Angeles Times Sep. 20, 2026

“You have solved for the richest among us—well done. If you solve for the least among us, those who can never thank you, you have changed the world.”

From Slate Sep. 20, 2026

Ma needs pecans for Texas chewy pralines, cornmeal for corn bread, and wool so she can knit us socks.

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

At the same time, industry generates vast quantities of silicon-rich waste, including coal ash residue, red mud, mine tailings, concrete debris, waste glass, and metallurgical slag.

From Science Daily Sep. 19, 2026

Bad movies are a low-key passion of mine.

From Salon Sep. 18, 2026

In a recent case, a patient of mine learned through his portal that his previously cured cancer had returned and metastasized.

From The Wall Street Journal Sep. 17, 2026

“Tova’s crabbiness certainly fits with mine right now. And her age,” she said.

From Los Angeles Times Sep. 15, 2026

Every seat in the place is taken, all eyes except mine are glued to one of the flat-screen TVs, watching the Leafs battle the Montréal Canadiens.

From "Red Flags and Butterflies" by Sheryl Azzam

Looking back, I suspect my father had recently begun making a little more money, because that afternoon we bought two things I distinctly remember never having had before: Kerrygold butter and a jar of Rao’s.

From Salon Sep. 20, 2026

For months, current and former high school coaches have been asked to respond to my simple question:

From Los Angeles Times Sep. 20, 2026

"So, I'm not making decisions sat in York and North Yorkshire on my own. It's in partnership with the two local authorities."

From BBC Sep. 20, 2026

At $12.99 for two jars, it had stopped being the sauce from the fancy grocery store and become simply the sauce my mother bought.

From Salon Sep. 20, 2026

Her body heat warms me, calms my shivering.

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

"This arrangement enabled us to pack in much more ytterbium. In our particles, the light energy coming in flows almost entirely in one direction, inward toward the erbium ions."

From Science Daily Sep. 20, 2026

“Because they care about our spending priorities. And so I think more often than not, the debt matters because of its consequences.”

From MarketWatch Sep. 20, 2026

Read our critics’ opinions of the collection and the building.

From The Wall Street Journal Sep. 20, 2026

"And if that's one of the pinnacle trophies in world cricket, why would we not be trying to get it along with every other marquee event that comes our way?"

From BBC Sep. 20, 2026

Since this isn’t our normal route, I don’t usually see the building that has caused all this drama in Davey.

From "Split the Sky" by Marie Arnold

They’re surprisingly warm inside, and ours made a cozy setting for pork belly skewers, crab puffs and smoked cocktails.

From Salon Sep. 8, 2026

He said the premium still felt like a "death tax" and the family were being "penalised through no fault of ours".

From BBC Sep. 7, 2026

At Camp Golden Eagle, in Woodruff, Wis., all the usual activities were ours: baseball, archery, canoeing, swimming.

From The Wall Street Journal Sep. 3, 2026

It’s offensive because cases like ours could have been settled for significantly less than what the verdict is.”

From Los Angeles Times Aug. 22, 2026

Erica reached out her hand to shake ours.

From "Maybe He Just Likes You" by Barbara Dee

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