Definition of yeast in English:
1A microscopic fungus consisting of single oval cells that reproduce by budding, and capable of converting sugar into alcohol and carbon dioxide.
- Genus Saccharomyces, subdivision Ascomycotina
- The yeast cells in the envelope of yeast are the cells that do the work in your loaf of bread.
- I heard and watched the students grasp the understanding of how yeast absorbs sugar.
- The yeast uses this sugar in the same way it uses the glucose in white sugar.
1.1A greyish-yellow preparation of the yeast fungus obtained chiefly from fermented beer, used as a fermenting agent, to raise bread dough, and as a food supplement.
- As beer brewers do with yeast, the Wiandts drop bits of mycelia into a malt sugar solution.
- The inclusion of yeast results in fermentation and causes the dough to rise, if it is left in a warm place.
- To make dough, allow yeast to stand in a small bowl until frothy, about 10 minutes.
1.2 [count noun] Biology Any unicellular fungus that reproduces vegetatively by budding or fission, including forms such as candida that can cause disease.
- In budding and fission yeasts, life span is defined by the methods used to measure it.
- Unlike other fungi, budding and fission yeasts lack endogenous DNA methylation.
- Candida species are polymorphic and can form colonies containing budding yeasts, pseudohyphae, and true hyphae.
- Example sentences
- Thrush is an infection in the mouth caused by a yeast-like organism called Candida albicans.
- Candidiasis is an infection caused by Candida, a yeast-like fungus.
- Pneumocystis carinii is a parasitic, sometimes pathogenic, yeast-like fungus found in the lungs of laboratory rats.
Definition of yeast in:
- US English dictionary
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