/ Dictionary / Index E elastance: Meaning and Definition of Find definitions for: e•las•tance Pronunciation: (i-las'tuns), [key] — n. Elect. the reciprocal of capacitance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: elastance (Thesaurus) elasmobranch elastase Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language