/ Dictionary / Index I is: Meaning and Definition of Find definitions for: is Pronunciation: (iz), [key] — v. 3rd pers. sing. pres. indic. of See (def. 21). is- Pronunciation: [key] var. ofbefore a vowel: isallobar. Is. Pronunciation: [key] Isaiah. island. isle. is. Pronunciation: [key] island. isle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: is (Thesaurus) Irwin Isa. Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language