/ Dictionary / Index I inextensible: Meaning and Definition of Find definitions for: in•ex•ten•si•ble Pronunciation: (in"ik-sten'su-bul), [key] — adj. not extensible; incapable of being extended or stretched. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: inextensible (Thesaurus) inexpungible in extenso* Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language