aerosol
noun
aero·sol
ˈer-ə-ˌsäl 
-ˌsȯl
-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
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, 1 May 2026
Non-volatile Particulate Matter (nvPM) counters measured soot and black carbon particles, while volatile aerosol and trace-gas instruments (chemiluminescent NOₓ analyzers, hygrometers, thermometers) logged exhaust and ambient chemistry.
—Srishti Gupta, Interesting Engineering, 29 Apr. 2026
Experts also recommend avoiding aerosol sprays, which can disperse sunscreen into the air and surrounding environment.
—ABC News, 28 Apr. 2026
Gross said the Noltes’ contention that LivaNova’s problems with the aerosol emissions in their heater-cooler devices were unique was inaccurate.
—Judy L. Thomas, Kansas City Star, 15 Apr. 2026
See All Example Sentences for aerosol
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Richard Tribou, The Orlando Sentinel, 1 May 2026
Non-volatile Particulate Matter (nvPM) counters measured soot and black carbon particles, while volatile aerosol and trace-gas instruments (chemiluminescent NOₓ analyzers, hygrometers, thermometers) logged exhaust and ambient chemistry.
—Srishti Gupta, Interesting Engineering, 29 Apr. 2026
Experts also recommend avoiding aerosol sprays, which can disperse sunscreen into the air and surrounding environment.
—ABC News, 28 Apr. 2026
Gross said the Noltes’ contention that LivaNova’s problems with the aerosol emissions in their heater-cooler devices were unique was inaccurate.
—Judy L. Thomas, Kansas City Star, 15 Apr. 2026
See All Example Sentences for aerosol
Cite this Entry
“Aerosol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aerosol. Accessed 4 May. 2026.
Copy CitationKids Definition
aerosol
noun
aero·sol
ˈar-ə-ˌsäl
ˈer-
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-
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
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