/ Dictionary / Index S spirit of nitrous ether: Meaning and Definition of Find definitions for: spir'it of ni'trous e'ther Pronunciation: [key] — Pharm. Pharm. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spirit of hartshorn spiritoso Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language