/ Dictionary / Index T tessera: Meaning and Definition of Find definitions for: tes•ser•a Pronunciation: (tes'ur-u), [key] — pl. tes•ser•ae one of the small pieces used in mosaic work. a small square of bone, wood, or the like, used in ancient times as a token, tally, ticket, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tessera (Thesaurus) tessellation tesseract Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language