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
This could have generated sunlight-reflecting aerosols that cooled the Red Planet, plunging it into a global winter that could in turn have let ice accumulate for a prolonged time.
—
Charles Q. Choi, Space.com, 22 Oct. 2025
In the Southern Hemisphere, on the other hand, a major volcanic eruption and Australian bush fires have both contributed aerosols to the atmosphere in the past few years, increasing reflectivity.
—Ryan Green, Scientific American, 22 Oct. 2025
Much of this is likely due to the unmasking of global warming from the decrease in aerosol pollution.
—Anna Skinner, MSNBC Newsweek, 6 Oct. 2025
Casteel suspects that long before whole-body deodorant arrived on the market, many people were using existing products in unsafe ways; in rare cases, people have died from inadvertently inhaling the gases of aerosol deodorants.
—Franklin Schneider, The Atlantic, 16 Sep. 2025
See All Example Sentences for aerosol
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Charles Q. Choi, Space.com, 22 Oct. 2025
In the Southern Hemisphere, on the other hand, a major volcanic eruption and Australian bush fires have both contributed aerosols to the atmosphere in the past few years, increasing reflectivity.
—Ryan Green, Scientific American, 22 Oct. 2025
Much of this is likely due to the unmasking of global warming from the decrease in aerosol pollution.
—Anna Skinner, MSNBC Newsweek, 6 Oct. 2025
Casteel suspects that long before whole-body deodorant arrived on the market, many people were using existing products in unsafe ways; in rare cases, people have died from inadvertently inhaling the gases of aerosol deodorants.
—Franklin Schneider, The Atlantic, 16 Sep. 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 4 Nov. 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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