Emily Dickinson Lexicon

ZU-MO-SIM'E-TER, n. [Gr. ζυμωσις, fermentation, and μετρεω, to measure.]

An instrument proposed by Swammerdam for ascertaining the degree of fermentation occasioned by the mixture of different liquids, and the degree of heat which they acquire in fermentation. – Cyc. [This should be written Zymosimeter.]