/ Dictionary / Index S sthenia: Meaning and Definition of Find definitions for: sthe•ni•a Pronunciation: (sthu-nī'u, sthē'nē-u), [key] — n. strength; excessive vital force. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. St. Helier sthenic Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language