1

foam

play
noun \ˈfōm\

Definition of foam

  1. 1 :  a light frothy mass of fine bubbles formed in or on the surface of a liquid or from a liquid: such asa :  a frothy mass formed in salivating or sweatingb :  a stabilized froth produced chemically or mechanically and used especially in fighting oil firesc :  a material in a lightweight cellular form resulting from introduction of gas bubbles during manufacture

  2. 2 :  sea

  3. 3 :  something resembling foam

foamless

play \ˈfōm-ləs\ adjective

Examples of foam in a Sentence

  1. As I poured the beer, foam bubbled up in the glass.

  2. The fire extinguisher is filled with foam.

  3. a can of shaving foam

Recent Examples of foam from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'foam.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of foam

Middle English fome, from Old English fām; akin to Old High German feim foam, Latin spuma foam, pumex pumice


2

foam

verb

Definition of foam

  1. intransitive verb
  2. 1a :  to produce or form foamb :  to froth at the mouth especially in anger; broadly :  to be angry

  3. 2 :  to gush out in foam

  4. 3 :  to become covered with or as if with foam streets … foaming with life — Thomas Wolfe

  5. transitive verb
  6. 1 :  to cause to foam; specifically :  to cause air bubbles to form in

  7. 2 :  to convert (something, such as a plastic) into a foam

foamable

play \ˈfō-mə-bəl\ adjective

foamer

play \ˈfō-mər\ noun

Examples of foam in a Sentence

  1. The soda foamed in the glass.

  2. The mixture will bubble and foam when you add the yeast.

Recent Examples of foam from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'foam.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of foam

before 12th century



FOAM Defined for English Language Learners

foam

play
noun

Definition of foam for English Language Learners

  • : a mass of small bubbles that are formed in or on a liquid

  • : a substance that is like a thick liquid made of many small bubbles

  • : a soft material that is used to make many products

foam

verb

Definition of foam for English Language Learners

  • : to produce foam


FOAM Defined for Kids

1

foam

play
noun \ˈfōm\

Definition of foam for Students

  1. :  a mass of tiny bubbles that forms in or on the surface of a liquid


2

foam

play
verb

Definition of foam for Students

foamed

;

foaming

  1. :  to produce or form a mass of tiny bubbles Baking soda will foam when you add vinegar.


Medical Dictionary

foam

play
noun \ˈfōm\

Medical Definition of foam

  1. :  a light frothy mass of fine bubbles formed in or on the surface of a liquid spermicidal foam

foam

verb


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