/ Dictionary / Index S semidesert: Meaning and Definition of Find definitions for: sem•i•des•ert Pronunciation: (sem"ē-dez'urt, sem"ī-), [key] — n. an extremely dry area characterized by sparse vegetation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: semidesert (Thesaurus) semideify semidetached Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language