/ Dictionary / Index D diathermic: Meaning and Definition of Find definitions for: di•a•ther•mic Pronunciation: (dī"u-thûr'mik), [key] — adj. of or pertaining to diathermy. capable of conducting heat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diathermancy diathermy Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language