/ Dictionary / Index A allseed: Meaning and Definition of Find definitions for: all•seed Pronunciation: (ôl'sēd"), [key] — n. any of various many-seeded plants, as the goosefoot, Chenopodium polyspermum, and the knotgrass, Polygonum aviculare. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. All Saints' Day All Souls' Day Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language