foam
Americannoun
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a collection of minute bubbles formed on the surface of a liquid by agitation, fermentation, etc..
foam on a glass of beer.
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the froth of perspiration, caused by great exertion, formed on the skin of a horse or other animal.
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froth formed from saliva in the mouth, as in epilepsy and rabies.
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a thick frothy substance, as shaving cream.
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(in firefighting)
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a chemically produced substance that smothers the flames on a burning liquid by forming a layer of minute, stable, heat-resistant bubbles on the liquid's surface.
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the layer of bubbles so formed.
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a dispersion of gas bubbles in a solid, as foam glass, foam rubber, polyfoam, or foamed metal.
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Literary. the sea.
verb (used without object)
verb (used with object)
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to cause to foam.
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to cover with foam; apply foam to.
to foam a runway before an emergency landing.
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to insulate with foam.
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to make (plastic, metal, etc.) into a foam.
idioms
noun
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a mass of small bubbles of gas formed on the surface of a liquid, such as the froth produced by agitating a solution of soap or detergent in water
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frothy saliva sometimes formed in and expelled from the mouth, as in rabies
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the frothy sweat of a horse or similar animal
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any of a number of light cellular solids made by creating bubbles of gas in the liquid material and solidifying it: used as insulators and in packaging
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( as modifier )
foam rubber
foam plastic
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a colloid consisting of a gas suspended in a liquid
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a mixture of chemicals sprayed from a fire extinguisher onto a burning substance to create a stable layer of bubbles which smothers the flames
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a poetic word for the sea
verb
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to produce or cause to produce foam; froth
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(intr) to be very angry (esp in the phrase foam at the mouth )
Other Word Forms
- defoam verb (used with object)
- foamable adjective
- foamer noun
- foamingly adverb
- foamless adjective
- foamlike adjective
- unfoamed adjective
- unfoaming adjective
Etymology
Origin of foam
before 900; Middle English fom, Old English fām; cognate with German Feim
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
You can add syrup drizzles on top, you can add soft-top cold foam.
Initial findings from the investigation suggest the fire at Le Constellation bar began as sparklers attached to champagne bottles ignited soundproof foam that lined the ceiling of the bar's basement, which was packed with people.
From BBC
He was sopping wet and covered with foam from the fermenting mash.
From Literature
The friends keep it low-tech, with an alert system consisting of fishing lines attached to plastic foam and held down by weights.
Hernandez told police she returned at 4:30 p.m. and found her 1-year-old foaming at the mouth in the midst of a seizure, according to the police report.
From Los Angeles Times
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
