Jisho

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Noun
1. bubble; foam; froth; suds; lather; head (on beer)
Wikipedia definition
2. FoamA foam is a substance that is formed by trapping pockets of gas in a liquid or solid. A bath sponge and the head on a glass of beer are examples of foams. In most foams, the volume of gas is large, with thin films of liquid or solid separating the regions of gas. An important division of solid foams is into closed-cell foams and open-cell foams. In a closed-cell foam, the gas forms discrete pockets, each completely surrounded by the solid material.
Read “Foam” on English Wikipedia
Read “泡” on Japanese Wikipedia
Read “Foam” on DBpedia
Other forms
沫 【あわ】泡 【あぶく】

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