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
Though stratospheric aerosol injection over the poles could potentially cool the lower atmosphere atop the ice caps, the study notes that the aerosols could actually the overlying stratosphere—which could disrupt atmospheric circulation, warming Russia in the winter.
—
Alec Luhn, Scientific American, 11 Sep. 2025
The mural will be created using latex and aerosol paints on concrete and will be roughly 50 feet in length, reaching up to 20 feet in height on the main wall and 15 feet on each side of the creek slopes.
—Linda McIntosh, San Diego Union-Tribune, 11 Sep. 2025
Remaining as quiet as possible, Super grabbed her bear spray, an aerosol repellent loaded with the chemical compound capsaicin, which is also found in human pepper spray.
—Owen Clarke, Outside, 29 Aug. 2025
Others are banned entirely, including strike anywhere matches, torch lighters, and flammable aerosols like spray paint.
—Michael Cappetta, Travel + Leisure, 21 Aug. 2025
See All Example Sentences for aerosol
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Alec Luhn, Scientific American, 11 Sep. 2025
The mural will be created using latex and aerosol paints on concrete and will be roughly 50 feet in length, reaching up to 20 feet in height on the main wall and 15 feet on each side of the creek slopes.
—Linda McIntosh, San Diego Union-Tribune, 11 Sep. 2025
Remaining as quiet as possible, Super grabbed her bear spray, an aerosol repellent loaded with the chemical compound capsaicin, which is also found in human pepper spray.
—Owen Clarke, Outside, 29 Aug. 2025
Others are banned entirely, including strike anywhere matches, torch lighters, and flammable aerosols like spray paint.
—Michael Cappetta, Travel + Leisure, 21 Aug. 2025
See All Example Sentences for aerosol
Cite this Entry
“Aerosol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aerosol. Accessed 16 Sep. 2025.
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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