American Heritage Dictionary
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Century Dictionary
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GNU Webster's 1913
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WordNet
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Elsewhere on the web
At this point the liquid in the bowl should be foamy or will effervesce slightly when the bowl is shaken; this is carbonation caused by the yeast.
The fundamental principle of protein skimmers is to effervesce or foam the water so that the muck and waste bi-products get collected and you are able to dispose of it.— Find Free Articles - ArticlesBase
Democracy will blossom and effervesce as there will be no more of that most egregious breech of the law - military seizure of political power.— Vanguard News
Then, embittered by misery, men's minds begin to ferment and effervesce, and what inevitably follows is the overthrow of a realm.— Diderot and the Encyclopædists Volume II.

American Heritage Dictionary (1)
Century Dictionary (1)
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