I, i: Meaning and Definition of


Pronunciation: (ī), [key]
— pl. I's Is, i's is.
  1. the ninth letter of the English alphabet, a vowel.
  2. any spoken sound represented by the letter I or i, as in big, nice, or ski.
  3. something having the shape of an
  4. a written or printed representation of the letter I or i.
  5. a device, as a printer's type, for reproducing the letter I or i.


Pronunciation: (ī), [key]
— pron., nom. poss. obj. pl. nom. poss. obj. n., pl. I, my mine, me we, our ours, us I's.
  1. the nominative singular pronoun, used by a speaker in referring to himself or herself.
  1. (used to denote the narrator of a literary work written in the first person singular).
  2. the ego.


Pronunciation: [key]
  1. interstate (used with a number to designate an interstate highway): I-95.


Pronunciation: [key]
— Symbol.
  1. the ninth in order or in a series.
  2. (sometimes l.c.) the Roman numeral for 1. Cf. Roman numerals.
  3. iodine.
  4. isoleucine.
  5. current.
  6. See


Pronunciation: [key]
— Math. Math.
  1. the imaginary number &fullradicoverminus1;.
  2. a unit vector on the x-axis of a coordinate system.


Pronunciation: [key]
  1. isotopic spin.


Pronunciation: [key]
  1. var. of


Pronunciation: [key]
  1. the typical ending of the first element of compounds of Latin words, asis of Greek words, but often used in English with a first element of any origin, if the second element is of Latin origin: cuneiform; Frenchify.


Pronunciation: [key]
  1. Independent.
  2. Island; Islands.
  3. Isle; Isles.


Pronunciation: [key]
  1. imperator.
  2. incisor.
  3. interest.
  4. intransitive.
  5. island.
  6. isle; isles.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.