/ Dictionary / Index A Archimedes: Meaning and Definition of Find definitions for: Ar•chi•me•des Pronunciation: (är"ku-mē'dēz), [key] — n. 287?–212 b.c., Greek mathematician, physicist, and inventor: discovered the principles of specific gravity and of the lever. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: archimedes (Thesaurus) Archimedean Archimedes' principle Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language