aerosol

noun

aero·​sol ˈer-ə-ˌsäl  -ˌsȯl 

1

: a suspension of fine solid or liquid particles in gas

Smoke, fog, and mist are aerosols.

airborne aerosol transmission of infective viral particles

also, aerosols plural : the fine particles of an aerosol

stratospheric aerosols

2

: a substance (such as an insecticide or medicine) dispensed from a pressurized container as an aerosol

also : the container for this

Examples of aerosol in a Sentence

Recent Examples on the Web

Aerosol Cans Never store aerosol cans in your oven drawer. —Gemma Johnstone, The Spruce, 2 Apr. 2026

The satellite also hosts the European Union’s Copernicus Sentinel-4 mission, which aims to monitor key air quality trace gases and aerosols over Europe in support of the Copernicus Atmosphere Monitoring Service (CAMS) at high spatial resolution and with a fast revisit time. —Richard Tribou, The Orlando Sentinel, 2 Apr. 2026

To date, the parties to the Montreal Protocol have phased out roughly 99% of ozone-depleting substances compared to 1990 levels — effectively eliminating the chemicals once used in nearly every refrigerator, air conditioner, and aerosol can on Earth. —Big Think, 31 Mar. 2026

Forms of deodorant include stick, roll-on, aerosol spray, powder and gel. —Bestreviews, Mercury News, 23 Mar. 2026

Word History

Etymology

aero- + -sol (in hydrosol)

First Known Use

1923, in the meaning defined at sense 1

Rhymes for aerosol

• alcohol
• arbitral
• basketball
• butanol
• cannonball
• carbinol
• catarrhal
• cortisol
• ethanol
• fireball
• gasohol
• guaiacol

Kids Definition

aerosol

noun

aero·​sol ˈar-ə-ˌsäl  ˈer- 

-ˌsȯl

: a mixture of fine solid or liquid particles and gas

smoke and fog are aerosols

Medical Definition

aerosol

noun

aero·​sol ˈar-ə-ˌsäl  ˈer- 

-ˌsȯl

1

: a suspension of fine solid or liquid particles in gas

smoke, fog, and mist are aerosols

2

: a substance (as an insecticide or medicine) dispensed from a pressurized container as an aerosol

also : the container for this