An aerosol is a substance released in very fine mist, like oven cleaner or air freshener. An aerosol contains tiny particles of liquid or solid suspended within a gas.

Spray paint is an aerosol product, released at the press of a button in a hissing spray. The aerosol paint emerges in the form of a gas, and adheres to the surface as a solid color. Aerosol products can be dangerous, since they're very flammable and can cause health problems if people inhale them. The word was coined in 1919, from a combination of aero-, "air" in Greek, and sol, short for solution.

Definitions of aerosol
  1. noun
    a cloud of solid or liquid particles in a gas
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    droplets of water vapor suspended in the air near the ground
    atmospheric moisture or dust or smoke that causes reduced visibility
    fume, smoke
    a cloud of fine particles suspended in a gas
    a large mass of fog on the sea (as seen from a distance)
    gun smoke
    smoke created by the firing of guns
    ice fog, pogonip
    a dense winter fog containing ice particles
    a thin fog with condensation near the ground
    pea soup, pea-souper
    a heavy thick yellow fog
    a stifling cloud of smoke
    type of:
    any collection of particles (e.g., smoke or dust) or gases that is visible
  2. noun
    a dispenser that holds a substance under pressure and that can release it as a fine spray (usually by means of a propellant gas)
    synonyms: aerosol bomb, aerosol can, aerosol container, spray can
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    pepper spray
    a nonlethal aerosol spray made with the pepper derivative oleoresin capiscum; used to cause temporary blindness and incapacitate an attacker; also used as a bear deterrent
    type of:
    a container so designed that the contents can be used in prescribed amounts
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