Main Entry:

¹i

Pronunciation:

\ˈī\

Function:

noun

Inflected Form(s):

plural i's or is \ˈīz\

Usage:

often capitalized often attributive

Date:

before 12th century

1 a: the 9th letter of the English alphabet b: a graphic representation of this letter c: a speech counterpart of orthographic i2: one — see number table3: a graphic device for reproducing the letter i4: one designated i especially as the ninth in order or class5: something shaped like the letter I6: a unit vector parallel to the x-axis7 [abbreviation for incomplete] a: a grade rating a student's work as incomplete b: one graded or rated with an I8: I formation