foam

n.

1. 1. A mass of bubbles of air or gas in a matrix of liquid film, especially an accumulation of fine, frothy bubbles formed in or on the surface of a liquid, as from agitation or fermentation.
   2. A thick chemical froth, such as shaving cream or a substance used to fight fires.
2. 1. Frothy saliva produced especially as a result of physical exertion or a pathological condition.
   2. The frothy sweat of a horse or other equine animal.
3. The sea.
4. Any of various light, porous, semirigid or spongy materials used for thermal insulation or shock absorption, as in packaging.

v., foamed, foam·ing, foams.

v.intr.

1. To produce or issue as foam; froth.
2. 1. To produce foam from the mouth, as from exertion or a pathological condition.
   2. To be extremely angry; rage: was foaming over the disastrous budget cuts.
3. To teem; seethe: a playground foaming with third graders.

v.tr.

1. To cause to produce foam.
2. To cause to become foam.

[Middle English fom, from Old English fām.]

A material made up of gas bubbles separated from one another by films of liquid. The bubbles are spherical when the liquid films separating them are thick (approximately 0.01 mm). Pure liquids do not foam; that is to say, they cannot produce liquid films of any permanence. Relatively permanent films are created only when a substance is present that is adsorbed at the surface of the liquid. Substances capable of being so adsorbed may be in true solution in the liquid or may be particles of a finely divided solid, which, because of poor wetting by the liquid, remain at the surface. In both cases, surface layers of the added substance are produced. The reluctance of the adsorbed substance to enter the bulk of the liquid preserves the surface and, hence, the thermodynamic stability of the foam. See also Surfactant.

Although thermodynamically stable, a foam is mechanically fragile. Offsetting this fragility to some extent are mechanisms that provide the liquid films with resiliency and plasticity.

Although foams of exceptional stability are desired in some commercial applications, foam is a nuisance in many situations. A common recourse is the addition of chemical antifoams, which are usually insoluble liquids of very low surface tension. When a droplet of such a liquid is sprayed onto the foam or is carried into it by mechanical agitation, it spreads spontaneously and rapidly at the surface of the film, virtually sweeping the film away as it does so. See also Adsorption; Interface of phases.

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noun

A mass of bubbles in or on the surface of a liquid: froth, head, lather, spume, suds, yeast. See solid/liquid/consistency.

verb

1. To form or cause to form foam: bubble, cream, effervesce, fizz, froth, lather, spume, suds, yeast. See solid/liquid/consistency.
2. To be or become angry: anger, blow up, boil over, bristle, burn, explode, flare up, fume, rage, seethe. Informal steam. Idioms: blow a fuse, blow a gasket, blow one's stack/top, breathe fire, fly off the handle, get hot under the collar, hit the ceiling/roof, lose one's temper, see red. See feelings.

v

Definition: become bubbly
Antonyms: become flat

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Frothy liquid, e.g. from the nostrils of an animal with terminal pulmonary edema, in the rumen of the cow with frothy bloat.

• f. cell — vacuolated histiocytes.
• f. cell pneumonia — see endogenous lipid pneumonia.
• f. test — fresh urine is shaken vigorously. A yellow-green foam is indicative of bilirubinuria.

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Dansk (Danish)
n. - skum, fråde, hav
v. intr. - skumme, fråde
v. tr. - opskumme

idioms:

• foam at the mouth    have fråde om munden
• foam rubber    skumgummi

Nederlands (Dutch)
schuim, zeeschuim, schuimrubber, schuimbekken, omvormen tot schuimrubber, schuimen, doen schuimen, met schuim bedekken

Français (French)
n. - écume, mousse, (les) flots (littér), sueur (sur l'animal), mousse (chimique), mousse (plastique)
v. intr. - mousser, écumer de rage (fam), baver (un chien)
v. tr. - faire mousser, faire écumer

idioms:

• foam at the mouth    écumer de rage
• foam rubber    mousse de caoutchouc

Deutsch (German)
n. - Schaum, Schaumstoff
v. - schäumen

idioms:

• foam at the mouth    Schaum vorm Mund haben
• foam rubber    Schaumgummi

Ελληνική (Greek)
n. - αφρός, αφρώδες υλικό
v. - αφρίζω

idioms:

• foam at the mouth    αφρίζω, λυσσάω, μαίνομαι
• foam rubber    αφρώδες ελαστικό, αφρολέξ

Italiano (Italian)
avere la schiuma alla bocca, spumeggiare, gommapiuma, schiuma, di schiuma

idioms:

• foam at the mouth    avere la schiuma alla bocca
• foam rubber    gommapiuma

Português (Portuguese)
n. - espuma (f) (de banho, barbear, etc.)
v. - espumar

idioms:

• foam at the mouth    ficar furioso
• foam rubber    espuma (f) de borracha

Русский (Russian)
пена, пениться, переливаться через край

idioms:

• foam at the mouth    пена на губах, брызгать слюной, прийти в бешенство
• foam rubber    пористая резина, пенопласт

Español (Spanish)
n. - caucho espumoso, gomaespuma, espuma, espumoso
v. intr. - espumajear, espumar, hacer espuma, llenarse de espuma
v. tr. - llenar de espuma

idioms:

• foam at the mouth    espumajear, echar espuma por la boca
• foam rubber    caucho esponjoso, gomaespuma

Svenska (Swedish)
n. - skum
v. - skumma

中文（简体）(Chinese (Simplified))
泡沫, 泡沫材料, 水沫, 起泡沫, 吐白沫, 冒汗, 唾沫四溅, 使起泡沫

idioms:

• foam at the mouth    口吐泡沫, 非常愤怒
• foam rubber    泡沫橡胶, 海绵乳胶, 海绵橡胶

中文（繁體）(Chinese (Traditional))
n. - 泡沫, 泡沫材料, 水沫
v. intr. - 起泡沫, 吐白沫, 冒汗, 唾沫四濺
v. tr. - 使起泡沫

idioms:

• foam at the mouth    口吐泡沫, 非常憤怒
• foam rubber    泡沫橡膠, 海綿乳膠, 海綿橡膠

한국어 (Korean)
n. - 거품, 비지땀, 입의 거품
v. intr. - 거품을 내다, 거품이 일다
v. tr. - 거품 나게 하다

日本語 (Japanese)
n. - 泡
v. - 泡立つ, 泡を吹く

idioms:

• foam at the mouth    口から泡を吹く, かんかんに怒る
• foam rubber    気泡ゴム

العربيه (Arabic)
‏(الاسم) رغوة , زبد (فعل) يرغي , يزبد‏

עברית (Hebrew)
n. - ‮קצף, גומי-ריפוד, ספוג‬
v. intr. - ‮העלה קצף‬
v. tr. - ‮כיסה בקצף, הפך פלסטיק לקצף, קצף‬

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foam	Foam Mattress
Foam Cutter	Foam Board