/ Dictionary / Index C cataplasm: Meaning and Definition of Find definitions for: cat•a•plasm Pronunciation: (kat'u-plaz"um), [key] — n. Med. poultice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cataplasm (Thesaurus) cataplasia cataplexy Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language