foam

noun

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\ ˈfōm

Definition of foam

(Entry 1 of 2)

1 : a light frothy mass of fine bubbles formed in or on the surface of a liquid or from a liquid: such as

a : a frothy mass formed in salivating or sweating

b : a stabilized froth produced chemically or mechanically and used especially in fighting oil fires

c : a material in a lightweight cellular form resulting from introduction of gas bubbles during manufacture

2 : sea

3 : something resembling foam

foam

verb

foamed; foaming; foams

Definition of foam (Entry 2 of 2)

intransitive verb

1a : to produce or form foam

b : to froth at the mouth especially in anger broadly : to be angry

2 : to gush out in foam

3 : to become covered with or as if with foam streets … foaming with life— Thomas Wolfe

transitive verb

1 : to cause to foam specifically : to cause air bubbles to form in

2 : to convert (something, such as a plastic) into a foam

Other Words from foam Synonyms More Example Sentences Learn More About foam

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Other Words from foam

Noun

foamless \ ˈfōm-ləs

\ adjective

Verb

foamable \ ˈfō-mə-bəl

\ adjective

foamer \ ˈfō-mər

\ noun

Synonyms for foam

Synonyms: Noun

Synonyms: Verb

Examples of foam in a Sentence

Noun As I poured the beer, foam bubbled up in the glass. The fire extinguisher is filled with foam. a can of shaving foam Verb The soda foamed in the glass. The mixture will bubble and foam when you add the yeast.

Recent Examples on the Web: Noun Each latex figure is 4½ feet tall, foam-filled and precision-painted to spook during even the closest encounters. — Matthew Kronsberg, WSJ, 1 Oct. 2021 Unexpected climate events like February’s deep freeze in Texas have stalled the assembly both of finished products and the components needed to produce them, such as the foam in couches or computer chips in cars. — BostonGlobe.com, 16 Sep. 2021 Quality bean lovers should seek out any number of the newer craft coffee shops that now proliferate Paris for a true filtre (long, black drip coffee) or a crème where the foam isn't the equivalent of overly soapy bath bubbles. — Sara Lieberman, Travel + Leisure, 15 Sep. 2021 There are delays for farm machinery and for essential components such as box blades, microchips, plastics, pallets, and the foam required for tractor seats. — Anna Wiener, The New Yorker, 15 Sep. 2021 Because of the cold foam, this one sadly can’t be made vegan or dairy-free. — Lindy Segal, Glamour, 24 Aug. 2021 No human is capable of stirring up water from the Tethys Ocean (which already ceased to exist in antiquity, and only lives on as the eastern basin of the Mediterranean) sufficiently to produce the foam from which cypris formed. — Alexander Kluge, Harper's Magazine, 17 Aug. 2021 Some patients, feeling ping-ponged between Philips, medical-device suppliers, doctors and insurers, are taking matters into their own hands, either by removing the foam themselves or bypassing insurance to buy new or used machines out of pocket. — WSJ, 15 Aug. 2021 By late March of this year, the department had compiled a list of 698 military installations across the country that had probably used or released the firefighting foam, now known to be hazardous. — Washington Post, 12 Aug. 2021 Recent Examples on the Web: Verb Whisk in the sugar to combine, then switch to a silicone spatula and bring the mixture to a boil — the milk will foam and rise up. — San Diego Union-Tribune, 9 June 2021 Whisk in the sugar to combine, then switch to a silicone spatula and bring the mixture to a boil — the milk will foam and rise up. — San Diego Union-Tribune, 9 June 2021 Whisk in the sugar to combine, then switch to a silicone spatula and bring the mixture to a boil — the milk will foam and rise up. — San Diego Union-Tribune, 9 June 2021 Whisk in the sugar to combine, then switch to a silicone spatula and bring the mixture to a boil — the milk will foam and rise up. — San Diego Union-Tribune, 9 June 2021 Whisk in the sugar to combine, then switch to a silicone spatula and bring the mixture to a boil — the milk will foam and rise up. — San Diego Union-Tribune, 9 June 2021 Whisk in the sugar to combine, then switch to a silicone spatula and bring the mixture to a boil — the milk will foam and rise up. — San Diego Union-Tribune, 9 June 2021 Whisk in the sugar to combine, then switch to a silicone spatula and bring the mixture to a boil — the milk will foam and rise up. — San Diego Union-Tribune, 9 June 2021 For every cup of water, add 1 tablespoon baking soda, sprinkling it in carefully, as soda will cause water to foam up. — Tribune News Service, cleveland, 28 Apr. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'foam.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.