i
the imaginary number .
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i
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I
Inounthe ninth letter of the English alphabet, a vowel.
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i-
i-variant of y-.
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i.
i.abbreviationimperator.
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-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.
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I.
I.abbreviationIndependent.
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-i
-isuffixof or relating to a region or people, esp of the Middle East
i
1 AmericanMathematics.
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Also called imaginary unit. the imaginary number .
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a unit vector on the x -axis of a coordinate system.
I
2
American
[ahy]
/ aɪ /
Or
i
noun
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I's,
plural
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Is,
plural
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i's,
plural
-
is
plural
-
the ninth letter of the English alphabet, a vowel.
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any spoken sound represented by the letter I or i, as in big, nice, or ski.
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something having the shape of an I.
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a written or printed representation of the letter I or i.
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a device, as a printer's type, for reproducing the letter I or i.
I
3
American
[ahy]
/ aɪ /
pronoun
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we,
plural nominative
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me,
objective
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us,
objective
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my,
possessive
-
mine,
possessive
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our,
possessive
-
ours
possessive
noun
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I's
plural
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(used to denote the narrator of a literary work written in the first person singular.)
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Metaphysics. the ego.
I
4
American
abbreviation
I
5
American
Symbol.
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the ninth in order or in a series.
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(sometimes lowercase) the Roman numeral for 1.
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Chemistry. iodine.
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Biochemistry. isoleucine.
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Electricity. current.
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Logic. particular affirmative.
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(italics) isotopic spin.
i-
6
American
i.
7
American
abbreviation
-
imperator.
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incisor.
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interest.
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intransitive.
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island.
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isle; isles.
-i-
8
American
I.
9
American
abbreviation
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Independent.
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Island; Islands.
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Isle; Isles.
I
1
British
/ aɪ /
pronoun
I
2
British
symbol
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chem iodine
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physics current
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physics isospin
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logic a particular affirmative categorial statement, such as some men are married, often symbolized as SiP Compare A E O 1
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one See Roman numerals
abbreviation
-i-
3
British
I.
4
British
abbreviation
-
International
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Island or Isle
i
5
British
/ aɪ /
noun
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the ninth letter and third vowel of the modern English alphabet
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any of several speech sounds represented by this letter, in English as in bite or hit
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something shaped like an I
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( in combination )
an I-beam
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to pay meticulous attention to detail
i
6
British
symbol
-i
7
British
suffix
i
Scientific
/ ī /
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:
A landmark report proposing to create career plans for 14-year-olds and above to help them with their future employment, is the lead of the i Paper.
From BBC ● Oct. 22, 2026
The i Paper also leads with the spy chief's speech, quoting him as saying threats from foreign adversaries have quadrupled in a decade.
From BBC ● Oct. 14, 2026
“Dr. Williams has always maintained that he was acting i self-defense,” Libman wrote in an email.
From Los Angeles Times ● Oct. 9, 2026
Seven & i maintained its top- and bottom-line forecasts for the fiscal year ending February, expecting revenue to be flat at ¥10.430 trillion and net profit to fall 5.0% to ¥278.00 billion.
From The Wall Street Journal ● Oct. 8, 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
I got back up unscathed and proceeded to surprise him with an on-air Valentine’s Day marriage proposal on “KTLA 5 Morning News.”
From Los Angeles Times ● Oct. 23, 2026
I was surprised by his meniscus-only recommendation, especially because the other three surgeons had breezily recommended the full reconstruction.
From Los Angeles Times ● Oct. 23, 2026
A week later, I limped into Mandelbaum’s exam room.
From Los Angeles Times ● Oct. 23, 2026
As a woman in her 50s living in youth-obsessed Los Angeles, I was well aware of my age.
From Los Angeles Times ● Oct. 23, 2026
“Wish I could trade you for a horse.”
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
I think ye guess whom they named; if ye do not, I-290--vol i- will upon my next letters write further.
From Memoirs of the Court of Queen Elizabeth by Lucy Aikin
Letters and proclamations were at the same time dispersed by Ashton, in-212--vol i- which the name of Elizabeth was employed without scruple.
From Memoirs of the Court of Queen Elizabeth by Lucy Aikin
For the face I grant I might well blush to offer,-104--vol i- but the mind I shall never be ashamed to present.
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
Combining the results from parts i. and ii., draw a rough sketch of f .
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
Sir Walter Raleigh's History of the World, part i, book i. p. 67., edit.
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 R. G. (Robert Gordon) Latham
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
Soccer: it’s been a long time coming between you and I. But here I am!
From Los Angeles Times ● Jul. 20, 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
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
The suffix -i, added to a noun stem, forms generally a neuter verb.
From The Mafulu Mountain People of British New Guinea by Robert Wood Williamson
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 Walter John Clark
Flocculus -i: a hairy or bristly appendage on the posterior coxa of some Hymenoptera.
From Explanation of Terms Used in Entomology by John. B. Smith
World War I’s Eastern Front has never attracted the same attention as its western counterpart.
From The Wall Street Journal ● Sep. 29, 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
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
Then he opened both his arms and said to the people, “And y’all choosed the most beautifullest, most perfectest day for doing it! Only thing I’s got to ask is, what kept you?”
From "Elijah of Buxton" by Christopher Paul Curtis
Is it friendship, though, or a mutually useful rapport?
From Los Angeles Times ● Oct. 23, 2026
Is he living solely off his Social Security?
From MarketWatch ● Oct. 22, 2026
Dench is releasing her memoir Is It Too Late to Make a Run for It? written with fellow actor Brendan O'Hea at the end of October in the UK.
From BBC ● Oct. 22, 2026
Is it possible that an under-the-radar composite materials company in St. Louis has cracked the code for running a family business sustainably while putting its workers’ well-being first?
From The Wall Street Journal ● Oct. 22, 2026
“The Wool Witches? Is there such a thing?”
From "Rump: The (Fairly) True Story of Rumpelstilskin" by Liesl Shurtliff
Now, there are still some t’s to cross and i’s to dot.
From Slate ● Oct. 3, 2026
"If I'm making a decision that is highly likely to be in legal challenge, I want to make sure I've dotted my i's and crossed my t's," she added.
From BBC ● Sep. 11, 2026
"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
Sometimes, he says, “dotting i’s and crossing t’s has to come second to right and wrong.”
From The Wall Street Journal ● Oct. 16, 2025
At Swarthmore, Libbi got all A’s and B’s and started to spell her name with two i’s.
From "Woe Is I" by Patricia T. O'Conner
“One of the goals of the company is to create a platform for mental healthcare that uses objective imagery to help patients understand why they’re experiencing life the way that they are,” Walke said.
From Science Daily ● Oct. 23, 2026
"That's one of the reasons this work is so exciting."
From Science Daily ● Oct. 23, 2026
Although the fundamental equations of quantum mechanics can describe the other two processes, calculating how energy is lost through atomic vibrations presents substantial computational obstacles.
From Science Daily ● Oct. 23, 2026
Deep within the brainstem is a tiny group of nerve cells that plays an outsized role in how the brain functions.
From Science Daily ● Oct. 23, 2026
The Philippines is an archipelago in the western Pacific Ocean consisting of more than seven thousand islands, many of them uninhabited.
From "At Last She Stood" by Erin Entrada Kelly
“And more importantly, we saw 68% remission in our clinical trial. So, it’s really a quantum change, an inflection point in what we can offer to patients. From a clinical care perspective, that’s really meaningful.”
From Science Daily ● Oct. 23, 2026
When we got back in the car, Drew was officially my fiancé.
From Los Angeles Times ● Oct. 23, 2026
"It is always a moment in the annual calendar where we support Stand Up To Cancer through Gogglebox," Burnham said of the recurring charity special.
From BBC ● Oct. 23, 2026
"What we found is that this internal conversion process turns out to be more important than we thought."
From Science Daily ● Oct. 23, 2026
When it comes to our chosen instruments, we don’t play around.
From "Split the Sky" by Marie Arnold
“My husband is also just a really good gut check for me of what matters to the people of Los Angeles versus what matters in the hallways of power,” she said.
From Los Angeles Times ● Oct. 23, 2026
"Sometimes it takes me longer to take a website down than to fix the PHP problem."
From BBC ● Oct. 23, 2026
It just reminds me of the movie theaters I grew up going to.
From Los Angeles Times ● Oct. 23, 2026
As age acceptance pulsed through me, I made my decision: I would go with the meniscus-only option.
From Los Angeles Times ● Oct. 23, 2026
The gunman ignores me, waiting until all three men untie their horses and giddyup down the road before holstering his gun.
From "Will’s Race for Home" by Jewell Parker Rhodes
"The underwater location allows us to implement systematic, large-scale surveys," Seama explains.
From Science Daily ● Oct. 23, 2026
None of it really makes sense, but none of us really makes sense.
From Los Angeles Times ● Oct. 23, 2026
"We came up with some unforced handling errors on first. We weren't at such a high completion rate but our skill with the ball let us get away with that," Barrow added.
From BBC ● Oct. 23, 2026
We are informed quite often about what the show is not, initially by Margaret, a delightful little white-haired lady who talks us through the first episode.
From The Wall Street Journal ● Oct. 23, 2026
Because Caesar defended us, he angered the ex-soldier.
From "Will’s Race for Home" by Jewell Parker Rhodes
I’ve seen it happen to friends of mine, where there is a separation because the people that we turned into are now no longer compatible.
From Los Angeles Times ● Oct. 23, 2026
Dad told me more than once that the house would be mine someday.
From MarketWatch ● Oct. 23, 2026
Coronado’s Curragh mine in Australia achieved its strongest quarter for run-of-mine coal production since 2020, says Jefferies.
From The Wall Street Journal ● Oct. 23, 2026
State-owned Codelco was, for example, forced to suspend expansion of the El Teniente mine -- Chile's largest -- after studies flagged up seismic risks.
From Barron's ● Oct. 22, 2026
Betsie’s and mine were both of Russian make, probably once trimmed with fur: threads showed where something had been torn from the collars and cuffs.
From "The Hiding Place" by Corrie ten Boom
As a young professional, my trick ankle gave out and I collapsed in front of my boyfriend, Drew, in the parking lot of a TV studio in Hollywood.
From Los Angeles Times ● Oct. 23, 2026
“Let’s have a party for my birthday,” I said.
From Los Angeles Times ● Oct. 23, 2026
When we got back in the car, Drew was officially my fiancé.
From Los Angeles Times ● Oct. 23, 2026
As a woman in her 50s living in youth-obsessed Los Angeles, I was well aware of my age.
From Los Angeles Times ● Oct. 23, 2026
One day I’ll tell my children how Caesar and Midnight changed the journey.
From "Will’s Race for Home" by Jewell Parker Rhodes
“In comparison to that study, our FDA trial reported a 52% reduction in symptoms, so more than a four-fold increase in efficacy,” Won said.
From Science Daily ● Oct. 23, 2026
When we sat for dinner, speeches — or rather, roasts — broke out around the table, with our shared peals of laughter making the air ring with life and its sweetness.
From Los Angeles Times ● Oct. 23, 2026
The longer wavelength red and orange colours are not scattered as readily so pass through to our eyes.
From BBC ● Oct. 23, 2026
“In the Middle East, our business grew 13% sequentially despite late-quarter disruptions,” he said.
From The Wall Street Journal ● Oct. 23, 2026
“Come to our house,” she says, and hangs up.
From "At Last She Stood" by Erin Entrada Kelly
The shame in this story was never his, and it was never ours.
From Salon ● Oct. 22, 2026
"That future is ours to build. Let us build," he said.
From Barron's ● Oct. 16, 2026
I tracked down two New Jersey record stores whose sites said they’d purchase all types of albums, so we carted ours to them.
From MarketWatch ● Oct. 8, 2026
“And because nearly 2,000 people are still inside who have not died, and whose lives are still ours to fight for.”
From Los Angeles Times ● Oct. 8, 2026
It was difficult, however, because to play Lotería we needed a caller, un cantor, and Papá had always been ours.
From "Summer of the Mariposas" by Guadalupe García McCall
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
