/ Dictionary / Index G guncotton: Meaning and Definition of Find definitions for: gun•cot•ton Pronunciation: (gun'kot"n), [key] — n. a highly explosive cellulose nitrate, made by digesting clean cotton in a mixture of one part nitric acid and three parts sulfuric acid: used in making smokeless powder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: guncotton (Thesaurus) gun carriage gun crew Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language