Definition of yeast in English:

yeast

noun

  • 1A microscopic fungus consisting of single oval cells that reproduce by budding, and are capable of converting sugar into alcohol and carbon dioxide.

    • ‘Some faulty wines undergo a secondary fermentation in the bottle, due to a small amount of yeast and sugar left inadvertently in the wine.’
    • ‘They would break up and rearrange themselves as the yeast cells reproduced.’
    • ‘Drosophila strains were maintained on standard cornmeal / yeast / sugar and agar media.’
    • ‘That sugar reacts with the live yeast to produce more carbon dioxide.’
    • ‘The yeast cells in the envelope of yeast are the cells that do the work in your loaf of bread.’
    • ‘The yeast uses this sugar in the same way it uses the glucose in white sugar.’
    • ‘The results described above suggest that anesthetics may inhibit yeast cell division by decreasing amino acid import.’
    • ‘Alcohol is chock full of sugar, and sugar causes yeast infections in many people.’
    • ‘This is inferred because spore viability is reduced in some checkpoint single mutants of budding yeast.’
    • ‘The first breakthrough came when Paul Nurse found a yeast gene that controlled the division of yeast cells.’
    • ‘Candida is a single-celled fungus or yeast cell that inhabits the intestinal tract and mucus membranes of every living person on the earth.’
    • ‘And, as each pint contains about eight billion cells of yeast, stressed yeast can dramatically alter taste.’
    • ‘Yeasts are single-celled plants which utilize sugar in building new yeast cells.’
    • ‘An inability to transport TPP across membranes was directly demonstrated only in yeast and liver cells.’
    • ‘I heard and watched the students grasp the understanding of how yeast absorbs sugar.’
    • ‘They are distributed not only in higher plants but also in algae, yeast, and cyanobacteria.’
    • ‘In budding yeast, many genes are induced early in the cell cycle.’
    • ‘Pour warm water into a bowl, and sprinkle over sugar and yeast.’
    • ‘Vitamin C has been shown to increase the activity of specific white blood cells that ingest and destroy bacteria, yeast and certain cancerous cells.’
    • ‘That's because when there are sufficient nutrients available, normal yeast reproduces asexually.’
    • ‘It involves putting yeast and sugar together in a bottle to create fizz.’
    • ‘This evolutionarily maintained mechanism has been detected from yeast to mammalian cells.’
    • ‘Their attempts to genetically engineer spider silk relied on the use of bacterial, yeast, or plant cells.’
    • ‘This method relies on fungi to break the complex sugars of rice into simple sugars that yeast can quickly convert to alcohol.’
    • ‘When you come back to your experiment, you'll notice that yeast cells do a really good job of creating carbon dioxide.’
    • ‘Well, fermentation is nothing less than single-celled yeast fungi busily reproducing - and turning sugar to ethanol in the process.’
    1. 1.1 A grayish-yellow preparation of yeast obtained chiefly from fermented beer, used as a fermenting agent, to raise bread dough, and as a food supplement.
      • ‘Kvass is a lightly fermented sour-sweet beverage that is commonly made of black bread or grain with yeast and somewhat resembles beer in flavor.’
      • ‘Added to selective breeding is another step, another human act, that of using yeast to raise the bread or ferment the wine.’
      • ‘Not yet available in the market, this bread is made of naturally fermented rice starter dough with no artificial yeast or preservatives added.’
      • ‘Place water, honey and yeast in the food processor and leave until frothy, about 10 minutes.’
      • ‘But orgies of organic molecules are not life, just as flour, water, yeast, and salt are not bread.’
      • ‘Each pack contained flour, sunflower oil, sugar, haricot beans, rice, salt, noodles, yeast, and canned food.’
      • ‘The bagel is defined as a hard bread roll made of yeast dough twisted into a doughnutlike shape, cooked in simmering water and then baked.’
      • ‘In yeast breads, use a bit more yeast or let the dough rise longer.’
      • ‘For the last ten years, like a lump of bread dough without yeast, our consumption rates have refused to rise.’
      • ‘When it came time to bake bread, a cup of this live culture would be added to the dough to provide the yeast needed to leaven the bread.’
      • ‘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.’
      • ‘They were raised on standard cornmeal medium supplemented with live yeast.’
      • ‘To make the dough, blend the yeast with 4 tbsp water at body temperature.’
      • ‘This bottle-conditioned ale contains live yeast which allows the beer to develop in the bottle.’
      • ‘One of the key ingredients in a home-baked loaf apart from yeast, flour, salt and water - is time.’
      • ‘Allowing the yeast or other leavening agents to do their duty.’
      • ‘The box contains all the ingredients, like the grape juice concentrate, yeast, and stabilizing agents.’
      • ‘Like with Mac's in Nelson, there's the pungent, delectable smell of yeast and fermentation.’
      • ‘To make dough, allow yeast to stand in a small bowl until frothy, about 10 minutes.’
      leavening, ferment, fermentation agent, raising agent, barm, baking powder
      View synonyms
    2. 1.2Biology 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.’
      • ‘Each subclass is essential for viability in both budding and fission yeasts; therefore they are not redundant factors.’
      • ‘Streptomyces rochei AK 39 was active against dermatophytes whereas yeasts and other molds were resistant.’
      • ‘The yeast Candida albicans and the beer yeast Saccharomyces cerevisiae have been demonstrated to increase atopic allergy.’
      • ‘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.’

Origin

Old English, of Germanic origin; related to Dutch gist and German Gischt ‘froth, yeast’, from an Indo-European root shared by Greek zein ‘to boil’.

Pronunciation

yeast

/jist//yēst/