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Definition of foam noun from the Oxford Advanced Learner's Dictionary

foam

noun
 
/fəʊm/
 
/fəʊm/
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  1. (also foam rubber)
     [uncountable] a soft light rubber material, full of small holes, that is used for seats, mattresses, etc.
    • a foam mattress
    • foam packaging
    see also memory foam
  2. [uncountable] a mass of very small air bubbles on the surface of a liquid synonym froth
    • a glass of beer with a good head of foam
    • The breaking waves left the beach covered with foam.
  3. [uncountable, countable] a chemical substance that forms or produces a soft mass of very small bubbles, used for washing, shaving (= cutting hair from the skin), or putting out fires, for example
    • a bottle of bath foam
    • The fire extinguisher directs foam onto the fire.
    see also shaving foam
    4. Word OriginOld English fām (noun), fǣman (verb), of West Germanic origin; related to Old High German feim (noun), feimen (verb).
See foam in the Oxford Advanced American DictionarySee foam in the Oxford Learner's Dictionary of Academic English
Check pronunciation: foam

Nearby words

trait
noun
 
 
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