Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “foam”

foam

noun [U] uk   /fəʊm/ us    /foʊm/

foam noun [U] (BUBBLES)

a mass of very small bubbles formed on the surface of a liquidMasses and large amounts of things a substance like cream that is filled with bubbles of air: shaving foamMasses and large amounts of things

foam noun [U] (SOFT MATERIAL)

a soft material used to fill furniture and other objectsMasses and large amounts of things

foam

verb [I] uk   /fəʊm/ us    /foʊm/
to produce small bubblesPhysical and chemical processes foam at the mouth If a person or an animal foams at the mouth, they have bubbles coming out of their mouth as a result of a disease.Veterinary medicineGeneral bodily disorders
(Definition of foam from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of foam?
Add Cambridge dictionaries to your browser to your website

Definitions of “foam” in other dictionaries

Word of the Day

throw

to send something through the air with force, especially by a sudden movement of the arm

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More