foam

• n. 泡；水の泡；消火用泡
• vi.泡立つ；泡立つ；泡で流れる
• vt.泡を立てる；泡状にする

PIE *spoiの「吐き出す」が語源で、spit、spew、spumeと語源的には同じ。 もともとは波の吹き出しによってできる泡のことであったが、後に一般化した。flint、splinterと比較される。

foam

foam: [OE] Foam is an ancient word, with several relatives widespread among the Indo-European languages, all denoting generally ‘substance made up of bubbles’: Latin pūmex, for instance, from which English gets pumice, and probably Latin spūma, from which we get spume [14]. These and other forms, such as Sanskrit phénas and Russian pena ‘foam’, point to a common Indo-European source *poimo-, which produced prehistoric West Germanic *faimaz – whence English foam.
=> pumice, spume

foam (n.)

Middle English fom, fome (c. 1300), from Old English fam "foam, saliva froth; sea," from West Germanic *faimo- (cognates: Old High German veim, German Feim), from PIE root *(s)poi-mo- "foam, froth" (cognates: Sanskrit phenah; Latin pumex "pumice," spuma "foam;" Old Church Slavonic pena "foam;" Lithuanian spaine "a streak of foam"). The plastic variety used in packaging, etc., so called from 1937.

foam (v.)

Old English famgian "to emit foam, to boil," from the source of foam (n.). Sense of "become foamy, to froth" is from late 14c. Transitive sense is from 1725. Related: Foamed; foaming.

1. We had given him a large foam mattress to sleep on.

私たちは彼に寝るために大きなスポンジマットレスをあげました。

2.Bring a sleeping bag and foam mat.

寝袋とフォームマットを持参する。

3.a glass of beer with a good head of foam

の上に厚い泡が乗ったビール1杯

4.She sat there，reclined against a foam rubber cushion.

彼女はそこにスポンジラバーマットに寄りかかって座っていた。

5. Foam rubber provides good insulation.

発泡ゴムの遮断性能は良好である.