Wiktionary
lithium stearate
n. (context chemistry English) the lithium salt of stearic acid; a lithium soap made from tallow
Wikipedia
Lithium stearate
Lithium stearate is a chemical compound with the formula LiOC(CH)CH. It is formally classified as a soap (a salt of a fatty acid). Lithium stearate is a white soft solid, prepared by the reaction of lithium hydroxide and stearic acid.
Lithium stearate and lithium 12-hydroxystearate are lithium soaps, and are components of lithium grease.