Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A mass of bubbles of air or gas in a matrix of liquid film, especially an accumulation of fine, frothy bubbles formed in or on the surface of a liquid, as from agitation or fermentation.
  • n. A thick chemical froth, such as shaving cream or a substance used to fight fires.
  • n. Frothy saliva produced especially as a result of physical exertion or a pathological condition.
  • n. The frothy sweat of a horse or other equine animal.
  • n. The sea.
  • n. Any of various light, porous, semirigid or spongy materials used for thermal insulation or shock absorption, as in packaging.
  • intransitive v. To produce or issue as foam; froth.
  • intransitive v. To produce foam from the mouth, as from exertion or a pathological condition.
  • intransitive v. To be extremely angry; rage: was foaming over the disastrous budget cuts.
  • intransitive v. To teem; seethe: a playground foaming with third graders.
  • transitive v. To cause to produce foam.
  • transitive v. To cause to become foam.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A substance composed of a large collection of bubbles or their solidified remains.
  • n. sea foam; (figuratively) the sea.
  • v. To form or emit foam.

from the GNU version of the Collaborative International Dictionary of English

  • n. The white substance, consisting of an aggregation of bubbles, which is formed on the surface of liquids, or in the mouth of an animal, by violent agitation or fermentation; froth; spume; scum.
  • intransitive v. To gather foam; to froth.
  • intransitive v. To form foam, or become filled with foam; -- said of a steam boiler when the water is unduly agitated and frothy, as because of chemical action.
  • transitive v. To cause to foam; ; also (with out), to throw out with rage or violence, as foam.

from The Century Dictionary and Cyclopedia

  • To form or gather foam, as water (the crest of a wave), etc., from agitation, a liquor from fermentation, or the mouth from rage or disease; froth; spume.
  • To become filled or covered with foam, as a steam-boiler when the water is frothy.
  • To cause to foam; fill with something that foams; make frothy: as, to foam a tankard.
  • To throw out with rage or violence: usually with out.
  • n. An aggregation of bubbles formed on the surface of water or other liquid by violent agitation or by fermentation; froth; spume: as, the foam of breaking waves; the foam of the mouth.
  • n. The foaming sea; a foaming wave.
  • n. Figuratively, foaming rage; fury.
  • n. In mineralogy, same as aphrite.
  • n. Scum, as from molten metal.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a lightweight material in cellular form; made by introducing gas bubbles during manufacture
  • v. become bubbly or frothy or foaming
  • n. a mass of small bubbles formed in or on a liquid

Etymologies

Middle English fom, from Old English fām.
(American Heritage® Dictionary of the English Language, Fourth Edition)
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 fê ("epilepsy"). (Wiktionary)

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