Foam Definition

fōm
foamed, foaming, foams
noun
foams
The whitish mass of bubbles formed on or in liquids by agitation, fermentation, etc.
Webster's New World
Any of various light, porous, semirigid or spongy materials, usually the solidified form of a liquid full of gas bubbles, used as a building material or for thermal insulation or shock absorption, as in packaging.
American Heritage
A kind of colloid in which a gas is suspended in a liquid or solid matter, having a texture ranging from soft and liquid, as whipped cream, to firm and elastic, as foam rubber.
Webster's New World
Frothy saliva produced especially as a result of physical exertion or a pathological condition.
American Heritage Medicine
Something like foam, as the heavy sweat of horses, or frothy saliva.
Webster's New World
verb
foamed, foaming, foams
To form, produce, or gather foam; froth.
Webster's New World
To produce foam from the mouth, as from exertion or a pathological condition.
American Heritage Medicine
To be extremely angry; rage.
American Heritage Medicine
To cause to foam.
Webster's New World
To teem; seethe.
A playground foaming with third graders.
American Heritage
Antonyms:
  • become flat
idiom
foam at the mouth
  • to be very angry; rage
Webster's New World

Idioms, Phrasal Verbs Related to Foam

Origin of Foam

  • From Middle English fom, from Old English fām (“foam”), from Proto-Germanic *faimaz (“foam”), from Proto-Indo-European *poyǝmn-, *spoyǝmn- (“foam”). Cognate with German Feim (“foam”), Latin spūma (“foam”), Latin pūmex (“pumice”), Kurdish (“epilepsy”).

    From Wiktionary

  • Middle English fom from Old English fām

    From American Heritage Dictionary of the English Language, 5th Edition

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