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phosphorus sesquisulfide

American

[ses-kwi-suhl-fahyd] / ˌsɛs kwɪˈsʌl faɪd /

noun

(not in scientific use) a yellow, crystalline, flammable substance, P 4 S 3 , insoluble in cold water and decomposed by hot water: used chiefly in organic synthesis and in the manufacture of matches.

Etymology

Origin of phosphorus sesquisulfide

sesqui- + sulfide

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.