foam

noun

\ 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

froth, head, lather, spume, suds, surf

Synonyms: Verb

boil, burn, fume, rage, rankle, seethe, sizzle, steam, storm

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

Either way, once the sash is closed and locked, the foam will seal out drafts. — Joseph Truini, Popular Mechanics, "How to Winterize Drafty Windows," 13 Sep. 2019 Following the July incident, the Boeing 737-800 was taken out of service and sent for maintenance, which was when the foam was discovered, the Miami Herald reported. — Rebecca Tan, Anchorage Daily News, "Airline mechanic accused of sabotaging jet navigation system was previously fired by Alaska Airlines for maintenance mistakes," 7 Sep. 2019 The most dangerous thing would be if there is some major collision and pieces of the foam sheared off. — The Economist, "The last of the great explorers," 6 Sep. 2019 Alani glued the foam inside the tube leading from the outside of the plane to its air data module, federal prosecutors allege. — Fox News, "American Airlines mechanic allegedly tampered with plane in Miami to delay or cancel flight," 6 Sep. 2019 Following the July incident, the Boeing 737-800 was taken out of service and sent for maintenance, which was when the foam was discovered, the Miami Herald reported. — Rebecca Tan, Washington Post, "American Airlines mechanic sabotaged plane’s navigation system amid labor dispute, feds say," 6 Sep. 2019 In this case, the cold foam also includes a splash of Starbucks pumpkin sauce, which lends the drink a subtle pumpkin flavor. — Lauren Saria, azcentral, "Here's what the new Starbucks Pumpkin Cream Cold Brew really tastes like," 27 Aug. 2019 The foam traveled downstream, contaminating much of the waterway in Windsor near its confluence with the Connecticut River. — Peter Marteka, courant.com, "A journey along the Farmington River in Bloomfield," 23 Aug. 2019 Desserts, too — like the Flan al estilo traditional de mama Marisa con espuma de crema Catalana ($10) feature those citrus notes, employing actual oranges and the essence thereof in the Catalan cream foam. — Amy Drew Thompson, orlandosentinel.com, "Disney Springs: Celebrity chef José Andrés has a heavenly hit in Jaleo," 1 Aug. 2019

Recent Examples on the Web: Verb

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 State officials warned recreational users on the Kentucky River that runoff would result in water discoloration, foaming and an odor. — USA TODAY, "Robot hostesses, veggie booze, ‘civil death’: News from around our 50 states," 4 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.