/ Dictionary / Index T Thermopane: Meaning and Definition of Find definitions for: Ther•mo•pane Pronunciation: (thûr'mu-pān"), [key] — Trademark. Trademark. a brand name for a hermetically sealed double glazing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thermonuclear reaction thermoperiodic Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language