foam

Meanings

1. 1
   noun

   a mass of small bubbles formed in or on a liquid

   The beer had a thick head of foam.

2. 2
   noun

   A substance composed of a large collection of bubbles or their solidified remains, especially

   Similarly, the biotech giant Cargill has begun manufacturing a polymer from vegetable oils that is used in polyurethane foams, which is found in beddings, furniture and car-seat headrests.

3. 3
   noun

   A material formed by trapping pockets of gas in a liquid or solid.

   A foam mat can soften a hard seat.

4. 4
   noun

   The sea.

   He is in Europe, across the foam.

From Middle English fom, foom, from Old English fām, from Proto-West Germanic *faim, from Proto-Germanic *faimaz, from Proto-Indo-European *(s)poHy-m-os, from *(s)poH(y)- (“foam”). Cognate with German Feim (“foam”), Latin spūma (“foam”), Latin pūmex (“pumice”), Sanskrit फेन (phéna, “foam”), possibly Northern Kurdish fê (“epilepsy”).

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