/ Dictionary / Index T tellurion: Meaning and Definition of Find definitions for: tel•lu•ri•on Pronunciation: (te-loor'ē-on"), [key] — n. an apparatus for showing the manner in which the diurnal rotation and annual revolution of the earth and the obliquity of its axis produce the alternation of day and night and the changes of the seasons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. telluride tellurite Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language