/ Dictionary / Index C cottonseed: Meaning and Definition of Find definitions for: cot•ton•seed Pronunciation: (kot'n-sēd"), [key] — pl. -seeds, -seed. the seed of the cotton plant, yielding an oil. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cottonseed (Thesaurus) cotton press cottonseed cake Related Content Daily Word Quiz: knead Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language