/ Dictionary / Index P perfectible: Meaning and Definition of Find definitions for: per•fect•i•ble Pronunciation: (pur-fek'tu-bul), [key] — adj. capable of becoming or of being made perfect; improvable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: perfectible (Thesaurus) perfect gas perfecting press Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language