/ Dictionary / Index K known: Meaning and Definition of Find definitions for: known Pronunciation: (nōn), [key] — v. pp. of. —n. a known quantity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: known (Thesaurus) knowledge engineering know-nothing Related Content Daily Word Quiz: serendipity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language