The 9th letter of the Roman alphabet
I, the ninth letter of the English alphabet, takes its form from the Ph'd2nician, through the Latin and the Greek. The Ph'd2nician letter was probably of Egyptian origin. Its original value was nearly the same as that of the Italian I, or long e as in mete. Etymologically I is most closely related to e, y, j, g; as in dint, dent, beverage, L. bibere; E. kin, AS. cynn; E. thin, AS. ynne; E. dominion, donjon, dungeon.
Noun
 the 9th letter of the Roman alphabet
Noun
 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"
Noun
 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)
Adjective S.
 used of a single unit or thing; not two or more; "`ane'' is Scottish"
 In our old authors, I was often used for ay (or aye), yes, which
   is pronounced nearly like it.
 As a numeral, I stands for 1, II for 2, etc.
object.
 The nominative case of the pronoun of the first person; the
   word with which a speaker or writer denotes himself.
I
I
I, the ninth letter of the English alphabet, takes its form from the Ph'd2nician, through the Latin and the Greek. The Ph'd2nician letter was probably of Egyptian origin. Its original value was nearly the same as that of the Italian I, or long e as in mete. Etymologically I is most closely related to e, y, j, g; as in dint, dent, beverage, L. bibere; E. kin, AS. cynn; E. thin, AS. ynne; E. dominion, donjon, dungeon.
The nominative case of the pronoun of the first person; the word with which a speaker or writer denotes himself.
Usage Examples
I, I, , I.