Webster's Revised Unabridged Dictionary · 1913

Saccharomyces

Saccharomyces , noun

[New Latin, from Greek {not transcribed} sugar + {not transcribed}, {not transcribed}, a fungus.]

(Biology) A genus of budding fungi, the various species of which have the power, to a greater or less extent, or splitting up sugar into alcohol and carbonic acid. They are the active agents in producing fermentation of wine, beer, etc. Saccharomyces cerevisiae is the yeast of sedimentary beer. Also called Torula.