/ Dictionary / Index C canister: Meaning and Definition of Find definitions for: can•is•ter Pronunciation: (kan'u-stur), [key] — n. a small box or jar, often one of a kitchen set, for holding tea, coffee, flour, and sugar. Also calledSee the part of a gas mask containing the neutralizing substances through which poisoned air is filtered. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: canister (Thesaurus) Canis Minor canker Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language