Pronunciation: (âr'u-sôl", -sol"),[key] —n. 1. Physical Chem.a system of colloidal particles dispersed in a gas; smoke or fog.
2. a liquid substance, as a disinfectant or deodorant, sealed in a metal container under pressure with an inert gas or other activating agent and released as a spray or foam through a push-button valve or nozzle: an aerosol for cleaning ovens. 3. See aerosol bomb.
—adj. of or containing a liquid or gas under pressure for dispensing as a spray or foam: a deodorant available in aerosol cans.