i Meaning, Definition & Usage

  1. 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)
    iodin; atomic number 53; iodine.
  2. noun the smallest whole number or a numeral representing this number
    ace; unity; one; 1; single.
    • he has the one but will need a two and three to go with it
    • they had lunch at one
  3. noun the 9th letter of the Roman alphabet
  4. adjective satellite used of a single unit or thing; not two or more
    1; ane; one.
    • `ane' is Scottish

WordNet

I
Definitions
  1. I, the ninth letter of the English alphabet, takes its form from the Phoenician, through the Latin and the Greek. The Phoenician 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. In English I has two principal vowel sounds: the long sound, as in pine, ice; and the short sound, as in p&icr;n. It has also three other sounds: (a) That of e in term, as in thirst. (b) That of e in mete (in words of foreign origin), as in machine, pique, regime. (c) That of consonant y (in many words in which it precedes another vowel), as in bunion, million, filial, Christian, etc. It enters into several digraphs, as in fail, field, seize, feign. friend; and with o often forms a proper diphtong, as in oil, join, coin. See Guide to Pronunciation, §§ 98-106. The dot which we place over the small or lower case i dates only from the 14th century. The sounds of I and J were originally represented by the same character, and even after the introduction of the form J into English dictionaries, words containing these letters were, till a comparatively recent time, classed together.
  2. In our old authors, I was often used for ay (or aye), yes, which is pronounced nearly like it.
  3. As a numeral, I stands for 1, II for 2, etc.
I pronoun
Etymology
OE. i, ich, ic, AS. ic; akin to OS. & D. ik, OHG. ih, G. ich, Icel. ek, Dan. jeg, Sw. jag, Goth. ik, OSlav. az', Russ. ia, W. i, L. ego, Gr. , , Skr. aham. Cf. Egoism.
Wordforms
possessive My or Mine ; objective Me plural nominative We ; possessive Our or Ours ; objective Us
Definitions
  1. The nominative case of the pronoun of the first person; the word with which a speaker or writer denotes himself.

Webster 1913