/ Dictionary / Index S salus populi suprema lex esto*: Meaning and Definition of Find definitions for: sa•lus po•pu•li su•pre•ma lex es•to Pronunciation: (sä'loos pô'poo-lē" s-prā'mä leks es'tō Eng. sā'l&schwas pop'y&schwa-lī"soo-prē'm&schwa leks es'tō), [key] — Latin. Latin. let the welfare of the people be the supreme law: a motto of Missouri. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Salus salutary Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language