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
8
: i formation
Definition of i (Entry 2 of 8)
1
industrial
2
initial
3
intelligence
4
intensity
5
interlaced
6
intransitive
7
island; isle
Definition of i (Entry 3 of 8)
imaginary unit
Imaginary numbers have an imaginary unit, like i, 4i, and -2i.— Yang Kuang and Elleyne Kase
I
pronounDefinition of I (Entry 4 of 8)
I
noun (2)Definition of I (Entry 5 of 8)
: someone aware of possessing a personal individuality : self
Definition of I (Entry 6 of 8)
1
electric current
2
Indian
3
interstate
4
Israeli
Definition of I (Entry 7 of 8)
iodine
-i-
affixDefinition of -i- (Entry 8 of 8)
—used as a connective vowel to join word elements especially of Latin origin matrilinealraticide
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Merriam-Webster unabridged
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Time Traveler for i
The first known use of i was before the 12th century
See more words from the same century