noun (1), often capitalized, often attributive
\ ˈī \
plural i's or is\ ˈīz \

Definition of i

 (Entry 1 of 8)

1a : 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


abbreviation (1)

Definition of i (Entry 2 of 8)

1 industrial
2 initial
3 intelligence
4 intensity
5 interlaced
6 intransitive
7 island; isle


symbol (1)

Definition of i (Entry 3 of 8)

imaginary unit
\ ˈī, ə\

Definition of I (Entry 4 of 8)

: the one who is speaking or writing I feel fine — compare me, mine, my, we
\ ˈī \
plural I's or Is\ ˈīz \

Definition of I (Entry 5 of 8)

: someone aware of possessing a personal individuality : self


abbreviation (2)

Definition of I (Entry 6 of 8)

1 electric current
2 Indian
3 interstate
4 Israeli


symbol (2)

Definition of I (Entry 7 of 8)




Definition of -i- (Entry 8 of 8)

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

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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.

Examples of i in a Sentence

Noun (1)

The word “ice” begins with an i. The word “ice” begins with i.

First Known Use of i

Noun (1)

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


before the 12th century, in the meaning defined above

Noun (2)

1539, in the meaning defined above

History and Etymology for i


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


Latin, thematic vowel of most nouns and adjectives in combination

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Learn More about i

Dictionary Entries near i







I'd (just) like to see him try

Statistics for i

Look-up Popularity

Time Traveler for i

The first known use of i was before the 12th century

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More Definitions for i



English Language Learners Definition of i

 (Entry 1 of 2)

: the ninth letter of the English alphabet

: the number one in Roman numerals

English Language Learners Definition of I (Entry 2 of 2)

: the person who is speaking or writing


noun, often capitalized
\ ˈī \
plural i's or is\ ˈīz \

Kids Definition of i

1 : the ninth letter of the English alphabet
2 : the number one in Roman numerals
\ ˈī, ə\

Kids Definition of I

: the person speaking or writing I am here.

Medical Definition of i

 (Entry 1 of 2)

1 incisor
2 optically inactive



Medical Definition of I (Entry 2 of 2)


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More from Merriam-Webster on i

Rhyming Dictionary: Words that rhyme with i

Spanish Central: Translation of i

Nglish: Translation of i for Spanish Speakers

Britannica English: Translation of i for Arabic Speakers

Comments on i

What made you want to look up i? Please tell us where you read or heard it (including the quote, if possible).


tremendous in size, volume, or degree

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