Real Dictionary

aerosol
An aerosol is a small container in which a liquid such as paint or deodorant is kept under pressure. When you press a button, the liquid is forced out as a fine spray or foam.
countable noun: An aerosol is a mixture of very small solid or liquid particles that can spread in the air.

aerosol in American English
a suspension of colloidal particles in a gas
designating or of a small container in which gas under pressure is used to aerate and dispense a liquid spray through a valve
noun: a system of colloidal particles dispersed in a gas; smoke or fog

aerosol in British English
noun: a colloidal dispersion of solid or liquid particles in a gas; smoke or fog

aerosol in Chemical Engineering
noun: An aerosol is a gas containing very small particles of a solid or liquid.

aerosol in the Pharmaceutical Industry
noun: An aerosol is a substance dispensed from a container under pressure. The substance is forced out of the container as a fine spray.