Small particles or liquid droplets in the atmosphere that can absorb or reflect sunlight depending on their composition.

 Solid or liquid particles suspended within the atmosphere (see "sulfate aerosols" and "black carbon aerosols").

A collection of airborne solid or liquid particles, with a typical size between 0.01 and 10 micrometer (~0.00000039 and ~0.00039 inch) that reside in the atmosphere for at least several hours. Aerosol [..]

Atmospheric aerosols are relatively small solid or liquid particles that are suspended (float) in the atmosphere. They can be produced naturally or by human activities. Their size typically ranges fro [..]

A suspension of very small solid or liquid particles in the air, residing in the atmosphere for at least several hours.

Suspended particles in the atmosphere which range in size from about 10-3 µm to 20 µm. Volcanoes, car exhaust, industrial plants, forest fires, and even ocean evaporation fill the Earth's atmosphere with not only gaseous pollutants, but also very small particles. These particles, which include dust, ash, spores, bacteria, viruses, ammonia, org [..]

are particles of solid or liquid matter that can remain suspended in air from a few minutes to many months depending on the particle size and weight.

Colloids with a gaseous dispersing phase and either liquid (fog) or solid (smoke) dispersed phase; used in Fumigation or in Inhalation therapy; may contain propellant agents.

A group of Methane-based halogenated hydrocarbons containing one or more Fluorine and Chlorine atoms.

Colloids with a gaseous dispersing phase and either liquid (fog) or solid (smoke) dispersed phase; used in fumigation or in inhalation therapy; may contain propellant agents.

dispersions of particles as fine droplets in a spray

A fine mist or spray that contains minute particles and may contain microorganisms.

Microscopic particles < 5 µm in size that are the residue of evaporated droplets and are produced when a person coughs, sneezes, shouts, or sings. These particles can remain suspended in the air for prolonged periods of time and can be carried on normal air currents in a room or beyond, to adjacent spaces or areas receiving exhaust air.

Tiny airborne droplets of water or other liquid. Aerosols are generated by misuse of high pressure hoses used to clean and sanitize equipment, floors, and drains. Microorganisms or harmful chemicals within aerosol droplets can rapidly spread through a plant. Workers should therefore protect exposed food and food contact surfaces when cleaning and s [..]

Aerosols are solid and/or liquid particles that are suspended in the air. They reach the atmosphere by means of natural processes (wind, desert storms, volcanic eruptions) or human activities (combustion of biomass and fossil fuels). The most important aerosols are mineral dust, sea salt, cellular (biological) particles, soot, organic compounds and [..]

Tiny liquid or solid particles of various composition that occur suspended in the atmosphere.

solid or liquid particles suspended within the atmosphere.

Gaseous, solid, or liquid materials distributed very finely in the air.