The Collaborative International Dictionary
Zymosimeter
Zymometer \Zy*mom"e*ter\, Zymosimeter \Zy`mo*sim"e*ter\, n. [Gr. ? ferment, or ? fermentation + -meter: cf. F. zymosim[`e]tre.] An instrument for ascertaining the degree of fermentation occasioned by the mixture of different liquids, and the degree of heat which they acquire in fermentation.
Wiktionary
zymosimeter
n. An instrument for ascertaining the degree of fermentation occasioned by the mixture of different liquids, and the degree of heat which they acquire in fermentation; a zymometer.