/ Dictionary / Index S sodium pentothal: Meaning and Definition of Find definitions for: so'dium pen'tothal Pronunciation: [key] — Pharm. Pharm. the sodium salt of thiopental sodium. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sodium nitrite sodium perborate Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language