microconstituent

[ mahy-kroh-kuhn-stich-oo-uhnt ]
/ ˌmaɪ kroʊ kənˈstɪtʃ u ənt /

noun

a microscopically small constituent of a metal or alloy.

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Origin of microconstituent

First recorded in 1900–05; micro- + constituent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020