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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  

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 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  
  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 4 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 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  

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 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:

The i Weekend says the prime minister and political leaders remember Widdecombe as a "distinguished politician", with the paper remarking she "delighted millions" when she appeared on the BBC's Strictly Come Dancing in 2010.

From BBC Jul. 10, 2026

For the fiscal year that began in March, Seven & i now expects revenue to be flat at Y10.43 trillion and net profit to decline 5.0% to Y278.00 billion.

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

"Heatwave UK: 50-year record broken again" reports the i Paper, as the Met Office forecasts 37C on Friday.

From BBC Jun. 26, 2026

The name stuck, and eventually, the symbol for the square root of –1 became i.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

World War I redefined the art of war and defined the genre of “trench art.”

From The Wall Street Journal Jul. 15, 2026

“I just felt I had all the tools necessary to bring this character to life,” Guido said.

From Los Angeles Times Jul. 15, 2026

Mark Joseph Stern: There has been a lot of misunderstanding about exactly what the liberal justices did in B.P.J., and I want to clear that up.

From Slate Jul. 15, 2026

"I think there's a particular openness in Welsh culture to mystery, magic and folklore, and the film sort of became a joyous celebration of that in a lot of ways."

From BBC Jul. 15, 2026

“Each day the wagon will grow lighter,” I promise.

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

Intelligence however had no-175--vol i- sooner reached the court of the reception afforded to the princess at Ricot, than directions arrived for her immediate removal to Woodstock.

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

I answered, in my-382--vol i- judgement the Italian dress; which answer I found pleased her well, for she delighted to show her golden coloured hair, wearing a caul and bonnet as they do in Italy.

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

The old ‘Minor Declensions’ had begun to pass over into the vocalic, especially into the i- and a-, declensions in the oldest OHG.

From A Middle High German Primer Third Edition by Wright, Joseph

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

Combining the results from parts i. and ii., draw a rough sketch of f .

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

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

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)

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

But for the 11 months we were married, I experienced the glory of being a we instead of an I. Suddenly I was part of a giant club, the Partnered People.

From Los Angeles Times May 22, 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

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

I. A. Horowitz, the editor of Chess Review, claimed that she was a “pain in the neck” for always appealing to him for more publicity for Bobby.

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

Flocculus -i: a hairy or bristly appendage on the posterior coxa of some Hymenoptera.

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

Every Esperanto verb has three Moods—the Conditional, the Imperative, and the Infinitive, which are formed respectively by means of the endings -us, -u, and -i.

From Esperanto Self-Taught with Phonetic Pronunciation by Mann, William W.

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

The medieval Cloth Hall and St. Martin’s Church were two of the most prominent monuments in Ypres, Belgium, and among World War I’s early casualties.

From The Wall Street Journal Jul. 15, 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

"I's a very different offering up there. You've still got beaches, but then you've got greenery and mountains and wildlife."

From BBC Apr. 18, 2026

Queen Elizabeth I’s elaborate mask-like daily makeup ritual not only hid her smallpox scars but was also meant to project a preternatural agelessness.

From Los Angeles Times Mar. 24, 2024

“Mama hear me hollering and drop her load and run just as hard out at me. I feels like I’s swimming I’s looking through so many tears.”

From "Elijah of Buxton" by Christopher Paul Curtis

Is her mother’s company really doing this to test out proprietary technology while ostensibly doing a good deed for a grieving parent?

From The Wall Street Journal Jul. 15, 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 there a smart way to manage an irregular income without feeling like every financial decision is a gamble?

From MarketWatch Jul. 13, 2026

Is revolution ever piecemeal, or does it have to come all at once?

From "Split the Sky" by Marie Arnold

"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

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

CPAs, those folks who can add columns of 9s in their heads, have been advising MDs since the 1980s to dot their i’s, cross their t’s, and never accept IOUs.

From "Woe Is I" by Patricia T. O'Conner

An Energy Department statement to MarketWatch on Wednesday indicated that the industry assertion of a “minimum operating level” of 250 million barrels is incorrect.

From MarketWatch Jul. 15, 2026

That corporation, OpenAI Group PBC, is still fully controlled by the nonprofit, whose mission directors fill the PBC’s board.

From The Wall Street Journal Jul. 15, 2026

The anecdotes bolster the theory that the U.S. economy is becoming more “K-shaped,” with wealthy Americans thriving as stock prices jump while middle- and low-income Americans struggle, as their wages aren’t keeping up with inflation.

From MarketWatch Jul. 15, 2026

And the board is required to ignore profit entirely on safety and security matters, which are pervasive.

From The Wall Street Journal Jul. 15, 2026

Joey’s little daughter, Cynthia, is only a toddler.

From "At Last She Stood" by Erin Entrada Kelly

Whenever we watch a silent film, it is helpful to remember that we are encountering an extraordinary survivor, for the vast majority of them are lost forever.

From The Wall Street Journal Jul. 15, 2026

There are steps we could take to make the court seem more like the public body it’s supposed to be.

From Slate Jul. 15, 2026

"Five years ago we asked for a fire plan for Glenmore because we knew something like this would happen. Nothing has happened."

From BBC Jul. 15, 2026

"If we do not see signs of disinflation soon, I am prepared to act," Federal Reserve governor Lisa Cook told an event in Washington.

From Barron's Jul. 15, 2026

If we were cattle, we’d be heading all the way to Kansas.

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

Tell me, Christopher Nolan, when did it first rosy-fingered dawn on you that your favorite type of protagonist — a tormented sinner-hero — was a specialty of the ancient Greeks?

From Los Angeles Times Jul. 15, 2026

"It was very important to me that the casting felt authentic," said Ryninks.

From BBC Jul. 15, 2026

“This recipe gives me the ability to deploy capital to these companies when they trade below intrinsic value,” along with confidence to invest more during periods of industry drawdowns, he said.

From MarketWatch Jul. 15, 2026

Mr. Alexander is enough of a practical politician to avoid such an analogy, but allow me to illustrate.

From The Wall Street Journal Jul. 15, 2026

More than anything, this trip taught me to be wary.

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

He gave us dozens of hours of inventive comedy and deserves much more glory than he has yet received.

From The Wall Street Journal Jul. 15, 2026

A new show at Roberts Projects lets us in on a different but equally foundational branch of Saar’s story: her costume design work.

From Los Angeles Times Jul. 15, 2026

"This could potentially overtake us here, this has gotten a little scary," a crew member says as the train rushes past burning trees near Armstrong, Ontario.

From BBC Jul. 15, 2026

“For us, that means treating every stock as an ownership stake in the business,” he said.

From MarketWatch Jul. 15, 2026

All of us are hot, sweaty, choking on lint.

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

The slight production decline was driven by lower output at the Antucoya mine, the London-listed miner said.

From The Wall Street Journal Jul. 15, 2026

Announcing its decision to close the Venetia mine, De Beers said it needed to cut costs and streamline operations given the depressed state of the world diamond market.

From BBC Jul. 14, 2026

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

Israeli Prime Minister Benjamin Netanyahu said: "Lindsey is a great friend of Israel and a cherished friend of mine."

From Barron's Jul. 12, 2026

She looked from one face to another, until she came to mine and gave a little gasp of comprehension.

From "The Hiding Place" by Corrie ten Boom

Detained since late January 2025, he described his time already spent behind bars as “extraordinarily difficult” and said, “I did not betray my country.”

From The Wall Street Journal Jul. 15, 2026

“By the time she was my age she had four kids, one was my mum, and now I get to do this.”

From Los Angeles Times Jul. 15, 2026

Ryninks said he had "always wanted to set a film on the Ceredigion coast as it's my favourite place in the world".

From BBC Jul. 15, 2026

"I woke up this morning and I didn't have to carry my ID anymore," Maria Jesus Walda, a 34-year-old civil engineer, told AFP as she headed into Gibraltar.

From Barron's Jul. 15, 2026

Clutching her mane, I throw my leg, myself, up and over her back.

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

After our 90-minute, $60 tour, Martin sold lobsters to go for $12.50 a piece, regardless of weight—a bargain.

From The Wall Street Journal Jul. 15, 2026

"I am fully committed to reaching our inflation target, and this commitment is unwavering," she added.

From Barron's Jul. 15, 2026

He said Conagra had what was “probably our strongest innovation pipeline” in place to engage consumers.

From MarketWatch Jul. 15, 2026

Composer Ludwig Göransson scores the breath-holding assault on Troy to drums that pound faster and faster on our nerves, as does our alarm that Odysseus’ troops aren’t the good guys.

From Los Angeles Times Jul. 15, 2026

In our time, we control most epileptic symptoms with powerful drugs called "anticonvulsants," because uncontrolled seizures can cause their own brain damage.

From "Phineas Gage" by John Fleischman

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

Last week, at an event in Washington, House Speaker Mike Johnson reminded the audience of one of John Quincy Adams’ favorite lines: “Duty is ours; results are God’s.”

From Salon Jul. 10, 2026

The Washington monument is both architecture and sculpture, a powerful symbol with layered meanings for different generations from Washington’s time to ours.

From The Wall Street Journal Jul. 3, 2026

"The shame is not yours. The shame was never yours. The shame is ours," he insisted.

From Barron's Jul. 2, 2026

But her farm was right behind ours, so I couldn’t pretend I had to go in another direction.

From "The Seven Wonders of Sassafras Springs" by Betty G. Birney

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