microconstituent

[ mahy-kroh-kuh n-stich-oo-uh nt ]
/ ˌmaɪ kroʊ kənˈstɪtʃ u ənt /

noun

a microscopically small constituent of a metal or alloy.

Origin of microconstituent

First recorded in 1900–05; micro- + constituent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019