/ Dictionary / Index S semirigid: Meaning and Definition of Find definitions for: sem•i•rig•id Pronunciation: (sem"ē-rij'id, sem"ī-), [key] — adj. not fully rigid; partly rigid. noting or pertaining to a type of airship whose shape is maintained by means of a rigid keellike structure and by internal gas pressure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: semirigid (Thesaurus) semireligious semiround 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