definition of
I

[1] #1 I n. [iodine, iodin, atomic number 53] a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks). wn

[2] #2 I s. [one, 1, i, ane] used of a single unit or thing; not two or more; "'ane' is Scottish". wn

[3] #3 I n. [one, 1, ace, single, unity] the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one". wn

[4] #4 I n. [i] the 9th letter of the Roman alphabet. wn

[5] #5 I n. [i] the 9th letter of the Roman alphabet. wn