The Collaborative International Dictionary
Yeast \Yeast\, n. [OE. [yogh]eest, [yogh]est, AS. gist; akin to D. gest, gist, G. gischt, g["a]scht, OHG. jesan, jerian, to ferment, G. gischen, g["a]schen, g["a]hren, Gr. ? boiled, zei^n to boil, Skr. yas. [root]11
] 1. The foam, or troth (top yeast), or the sediment (bottom yeast), of beer or other in fermentation, which contains the yeast plant or its spores, and under certain conditions produces fermentation in saccharine or farinaceous substances; a preparation used for raising dough for bread or cakes, and making it light and puffy; barm; ferment.
-
Spume, or foam, of water.
They melt thy yeast of waves, which mar Alike the Armada's pride, or spoils of Trafalgar.
--Byron.Yeast cake, a mealy cake impregnated with the live germs of the yeast plant, and used as a conveniently transportable substitute for yeast.
Yeast plant (Bot.), the vegetable organism, or fungus, of which beer yeast consists. The yeast plant is composed of simple cells, or granules, about one three-thousandth of an inch in diameter, often united into filaments which reproduce by budding, and under certain circumstances by the formation of spores. The name is extended to other ferments of the same genus. See Saccharomyces.
Yeast powder, a baling powder, -- used instead of yeast in leavening bread.
Usage examples of "yeast plant".
I can mention to one or two people in the yeast plant where he worked that Edwards killed his friend in a fit of temporary insanity and has been taken away for treatment.
The green-fly and its yeast plant have a permanent symbiotic relationship that is essential to the existence of both.
He sent it to files and picked up a memorandum from BuEcon: a virus had got into the great yeast plant at St.
This was a good crop year and they started operating the Montana yeast plant besides.