foam

/foum/
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foam

The barista pours milk, creating a thick foam on top of the latte.

Definition

  1. Noun:

    • A mass of small bubbles formed on the surface of a liquid: A light, frothy substance created when air or gas is trapped in a liquid, such as on beer, soapy water, or the ocean.
    • A lightweight, porous material: A solid substance, like foam rubber or foam plastic, that has a structure filled with many small air pockets, making it light and often soft.

  2. Verb:

    • To form or produce foam: To become covered with or consist of a mass of small bubbles; to froth.
    • To be very angry: (Figurative) To be so angry that one is described as foaming, often used in the phrase "foam at the mouth."
Usage Examples

  • Noun:

    • The waves crashed on the shore, leaving white foam on the sand.
    • The barista created beautiful latte art in the milk foam.
    • The mattress is made of memory foam for extra comfort.

  • Verb:

    • The angry dog began to foam at the mouth.
    • The waterfall caused the water to foam violently at the bottom.
    • Add the soap and whisk until the mixture foams.
Advanced Usage
  • "to foam at the mouth": To be extremely angry or furious.
    • He was foaming at the mouth after hearing the unfair decision.
  • "foam rubber": A specific type of soft, spongy rubber full of air bubbles, used in cushions and padding.
    • The chair's seat is padded with foam rubber.
Variants and Related Words
  • Foamy (adj): Covered with or resembling foam; frothy.
    • The foamy ocean waves were perfect for surfing.
  • Sea foam (n): The white foam formed on the surface of the sea.
  • Styrofoam (n): A trademark for a type of lightweight, rigid foam plastic, often used for insulation or disposable cups.
Synonyms
  • Froth (n/v): A mass of small bubbles; to produce froth. (Often interchangeable with 'foam' for liquids.)
  • Lather (n/v): A frothy white mass produced by soap or detergent mixed with water; to form lather.
  • Spume (n/v): (Literary) Froth or foam, especially on the sea.
Related Phrasal Verbs/Phrases
  • Foam up: To generate or become full of foam.
    • The detergent will foam up when you add water.
Related Idioms
  • All foam and no beer: (Informal) Something that appears impressive but has no real substance; all talk and no action.
    • His grand promises were all foam and no beer.
foam

The barista pours milk, creating a thick foam on top of the latte.

Noun
  1. a lightweight material in cellular form; made by introducing gas bubbles during manufacture
  2. a mass of small bubbles formed in or on a liquid
    • the beer had a thick head of foam
Verb
  1. become bubbly or frothy or foaming
    • The boiling soup was frothing
    • The river was foaming
    • Sparkling water

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