Meanings

A suspension of small particles in a gas; the particles may be solid or liquid or a mixture of both.

• engines

• pollution

• aerosols

• ozone layer

Waste material such as garbage, refuse, rubbish, and trash.

• pollution

• waste

• aerosols

• engine

A machine that converts energy into mechanical force or motion.

• pollution

• ozone layer

• waste

• engine

The act or process of polluting or the state of being polluted, especially the contamination of soil, water, or the atmosphere.

• ozone layer

• pollute

• waste

• aerosols

Region of the stratosphere containing relatively high concentrations of ozone.

• pollute

• ozone layer

• engine

• waste