/ Dictionary / Index I incompressible: Meaning and Definition of Find definitions for: in•com•press•i•ble Pronunciation: (in"kum-pres'u-bul), [key] — adj. not compressible. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: incompressible (Thesaurus) incomprehensive incomputable Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language