/ Dictionary / Index T telesterion: Meaning and Definition of Find definitions for: tel•es•te•ri•on Pronunciation: (tel"u-stēr'ē-on"), [key] — pl. tel•es•te•ri•a (in ancient Greece) a building in which religious mysteries were celebrated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. telestereoscope telesthesia Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language