/ Dictionary / Index C caducity: Meaning and Definition of Find definitions for: ca•du•ci•ty Pronunciation: (ku-d'si-tē, -dy'-), [key] — n. the infirmity or weakness of old age; senility. frailty; transitoriness: the caducity of life. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. caduceus caducous Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language