foam

noun
\ ˈfōm How to pronounce foam (audio) \

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

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Other Words from foam

Noun

foamless \ ˈfōm-​ləs How to pronounce foamless (audio) \ adjective

Verb

foamable \ ˈfō-​mə-​bəl How to pronounce foamable (audio) \ adjective
foamer \ ˈfō-​mər How to pronounce foamer (audio) \ noun

Synonyms for foam

Synonyms: Noun

Synonyms: Verb

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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.
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Recent Examples on the Web: Noun That foam often hits soil and spreads into groundwater and streams. Bruce Finley, The Denver Post, "Colorado ramps up response to toxic “forever chemicals” after discovery of hot spots across metro Denver," 10 Sep. 2019 Neither is polystyrene foam (like that found in meat packaging). Elena Shao, SFChronicle.com, "Recycling: 10 tips for getting it right," 9 Sep. 2019 Look for ventilated padding (typically made from foam with a mesh overlay), which is aerated so that the backpack doesn’t get too hot on your child, says Wu. NBC News, "How to choose a backpack that won't hurt your kids back," 3 Sep. 2019 At night the Courtyard is an overnight shelter that can accommodate up to 425 individuals with foam sleeping mats and blankets. Daniel Langhorne, Daily Pilot, "O.C. extends contract with embattled homeless shelter operator," 29 Aug. 2019 The lab also brought in Alaska Native students with the Alaska Native Science and Engineering Program to brainstorm uses for the foam-like material as insulation. Devin Kelly, Anchorage Daily News, "Using fungi, UAA team develops biodegradable insulation for shipping Alaska seafood," 14 July 2019 Mechanical systems, such as Mr. Trash Wheel, a litter interceptor in Maryland’s Baltimore Harbor, can be effective at picking up large pieces of plastic, such as foam cups and food containers, from inland waters. Laura Parker, National Geographic, "The world's plastic pollution crisis explained," 12 June 2019 The report argued WaveCel helmet users had a 98% less risk of concussion than a standard EPS foam helmet user. oregonlive, "WaveCel bursts onto the bike scene, expands into Wilsonville facility," 16 Sep. 2019 Our contractor also removed old foam insulation from a half bathroom right next to our kitchen this past week. Jennifer Jolly, USA TODAY, "Air pollution inside my house could kill me. What are you breathing in at your home?," 15 Sep. 2019 Recent Examples on the Web: Verb A few hours after the health aide finished cutting fish along the foaming shoreline, Aluska began the midnight to 4 a.m. patrol. Kyle Hopkins, ProPublica, "The Village Where Every Cop Has Been Convicted of Domestic Violence," 18 July 2019 Devils are onto something The Devils are having the kind of offseason that would leave David Puddy foaming at the mouth. Matt Porter, BostonGlobe.com, "Bruins’ Anders Bjork has healthy outlook despite shoulder injuries," 3 Aug. 2019 Piles of foaming bubbles, some a few feet high, greeted the crowds of children and adults who made their way through a fundraising race in Park Ridge Saturday. Jennifer Johnson, chicagotribune.com, "Park Ridge Bubble Run raises money for childhood cancer foundation," 20 Aug. 2019 The lifeguard dragged Cottrell, who was foaming at the mouth, to shore on his paddleboard and attempted to perform CPR. Fox News, "Seminary student, 22, drowns in ocean off Florida while on honeymoon, officials say," 31 July 2019 Brewer described Thomas as foaming at the mouth and having red bloodshot eyes. Washington Post, "Ex-deputy says he feared attack before shooting unarmed man," 1 Aug. 2019 Griot’s Garage interior detailer, foaming tire cleaner and 3-IN-ONE RVcare seal conditioner The summer show-and-shine season is in full chat and Griot’s Garage is out with a pair of new detailing products. San Diego Union-Tribune, "A little summer lovin’ for the care of cars and RVs," 21 July 2019 Rabid animals exhibit symptoms including aggressive behavior, seizures, lethargy, vomiting and foaming at the mouth. Tom Steele, Dallas News, "Bat at Fort Worth Water Gardens tests positive for rabies, health officials say," 24 July 2019 The non-comedogenic formula lightly foams to remove excess oil without over-stripping skin. Christina Heiser, NBC News, "The best products for oily skin, according to dermatologists," 6 July 2019

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.

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First Known Use of foam

Noun

before the 12th century, in the meaning defined at sense 1

Verb

before the 12th century, in the meaning defined at intransitive sense 1a

History and Etymology for foam

Noun

Middle English fome, from Old English fām; akin to Old High German feim foam, Latin spuma foam, pumex pumice

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Statistics for foam

Last Updated

5 Nov 2019

Time Traveler for foam

The first known use of foam was before the 12th century

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More Definitions for foam

foam

noun
How to pronounce foam (audio)

English Language Learners Definition of foam

 (Entry 1 of 2)

: a mass of small bubbles that are formed in or on a liquid
: a substance that is like a thick liquid made of many small bubbles
: a soft material that is used to make many products

foam

verb

English Language Learners Definition of foam (Entry 2 of 2)

: to produce foam

foam

noun
\ ˈfōm How to pronounce foam (audio) \

Kids Definition of foam

 (Entry 1 of 2)

: a mass of tiny bubbles that forms in or on the surface of a liquid

foam

verb
foamed; foaming

Kids Definition of foam (Entry 2 of 2)

: to produce or form a mass of tiny bubbles Baking soda will foam when you add vinegar.

foam

noun
\ ˈfōm How to pronounce foam (audio) \

Medical Definition of foam

: a light frothy mass of fine bubbles formed in or on the surface of a liquid spermicidal foam

Other Words from foam

foam verb

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More from Merriam-Webster on foam

Thesaurus: All synonyms and antonyms for foam

Rhyming Dictionary: Words that rhyme with foam

Spanish Central: Translation of foam

Nglish: Translation of foam for Spanish Speakers

Britannica English: Translation of foam for Arabic Speakers

Britannica.com: Encyclopedia article about foam

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