/ Dictionary / Index D dielectric: Meaning and Definition of Find definitions for: di•e•lec•tric Pronunciation: (dī"i-lek'trik), [key] — Elect. Elect. —n. a nonconducting substance; insulator. a substance in which an electric field can be maintained with a minimum loss of power. —adj. of or pertaining to a dielectric substance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dielectric (Thesaurus) dieldrin dielectric constant Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language