i

1 of 8

noun (1)

ˈī 

plural i's or is ˈīz 

often capitalized, often attributive

1

a

: the 9th letter of the English alphabet

b

: a graphic representation of this letter

c

: a speech counterpart of orthographic i

2

: one see Table of Numbers

3

: a graphic device for reproducing the letter i

4

: one designated i especially as the ninth in order or class

5

: something shaped like the letter I

6

: a unit vector parallel to the x-axis

7

[abbreviation for incomplete]

a

: a grade rating a student's work as incomplete

b

: one graded or rated with an I

8

: i formation

i

2 of 8

abbreviation (1)

1

industrial

2

initial

3

intelligence

4

intensity

5

interlaced

6

intransitive

7

island; isle

i

3 of 8

symbol (1)

imaginary unit

Imaginary numbers have an imaginary unit, like i, 4i, and -2i.

—Yang Kuang and Elleyne Kase

I

4 of 8

pronoun

ˈī 

ə

: the one who is speaking or writing

I feel fine

compare me, mine, my, we

me or I?: Usage Guide

Me is used in many constructions where strict grammarians prescribe I. This usage is not so much ungrammatical as indicative of the shrinking range of the nominative form: me began to replace I sometime around the 16th century largely because of the pressure of word order. I is now chiefly used as the subject of an immediately following verb. Me occurs in every other position: absolutely

who, me?

, emphatically

me too

, and after prepositions, conjunctions, and verbs, including be.

come with me

you're as big as me

it's me

Almost all usage books recognize the legitimacy of me in these positions, especially in speech; some recommend I in formal and especially written contexts after be and after as and than when the first term of the comparison is the subject of a verb.

I

5 of 8

noun (2)

ˈī 

plural I's or Is ˈīz 

: someone aware of possessing a personal individuality : self

I

6 of 8

abbreviation (2)

1

electric current

2

Indian

3

interstate

4

Israeli

I

7 of 8

symbol (2)

iodine

-i-

8 of 8

affix

—used as a connective vowel to join word elements especially of Latin origin

matrilineal

raticide

Examples of i in a Sentence

Noun (1)

The word “ice” begins with an i.

The word “ice” begins with i.

Recent Examples on the Web

Noun

There are typically three types of buyers: (i) strategic buyers already operating in your industry; (ii) financial buyers that are simply looking for investment opportunities; or (iii) other entrepreneurs looking for new companies to operate. —George Deeb, Forbes, 4 Nov. 2024

Watch The Adventures of Ichabod and Mr. Toad on Disney+ 27 of 46 Z-o-m-b-i-e-s In the suburban town of Seabrook, humans and zombies have integrated at the local high school after the government created a device that stops zombies from craving brains. —Catherine Santino, People.com, 11 Oct. 2024

Erich Zeller shows us some of the i:woody's other features, in the following German-language video. —Ben Coxworth, New Atlas, 30 Sep. 2024

The i menu is Nikon's take on an on-screen overlay menu. —PCMAG, 12 Sep. 2024

Word History

Etymology

Pronoun

Middle English, from Old English ic; akin to Old High German ih I, Latin ego, Greek egō

Affix

Latin, thematic vowel of most nouns and adjectives in combination

First Known Use

Noun (1)

before the 12th century, in the meaning defined at sense 1a

Pronoun

before the 12th century, in the meaning defined above

Noun (2)

1539, in the meaning defined above

Phrases Containing i

• as far/near as I can tell
• as if I cared
• don't I know it
• (don't) I wish
• how should/would I know
• how/why should I/we know
• how would I/we know
• I ask you
• I beam
• I beg your pardon
• I bet
• I (can) promise you
• I can't tell you
• I couldn't tell you
• I dare say
• I don't know
• I don't know about him/her
• I don't know about that
• I don't know about you/him/her/them
• I don't know what the world is coming to
• I don't mind if I do
• I don't mind telling you
• I don't suppose
• I fear
• if I may/might say so
• if I may say so
• if I say so myself
• if I were (someone)
• if I were you
• I formation
• if you know what I mean
• I have been there
• I have got to say
• I have it
• I have no idea
• I have to admit
• I have to say
• I have to warn you
• I hear what you're saying
• (I/I'll) tell you what
• I kid you not
• I knew it
• I know (it)
• I know what you mean
• I like that!
• I mean
• I must love you and leave you
• I/O device
• I say
• I shouldn't wonder
• I should/would think
• I swear
• I tell a lie
• I think not
• I think so
• I told you (so)
• I wouldn't bet on it
• I wouldn't know
• I wouldn't put it past (someone)
• like I said
• may I just say
• not that I mind
• see if I care
• so do I
• so don't I
• so I see
• the next thing I knew
• (there) but for the grace of God (go I)
• type I error
• well, I never
• what did I tell you
• World War I
• you know what I mean

Kids Definition

i

1 of 2 noun

ˈī

often capitalized

1

: the ninth letter of the English alphabet

2

: one in Roman numerals

3

: a grade rating a student's work as incomplete

I

2 of 2 pronoun

(ˈ)ī,

ə

: the person speaking or writing

I feel fine

Medical Definition

i

1 of 2 abbreviation

1

incisor

2

optically inactive

I

2 of 2 symbol

iodine