aerosol

Etymology

It is formed from English aero- (“air”) + sol (“a colloidal solution”),^{[2][3][4][5][6]} the second element being a chemical term taken from the first syllable of solution,^[2][7][8] as in hydrosol,^[2] and recorded from 1899.^[3] The first element comes from Ancient Greek ἀήρ (aḗr, “air, lower atmosphere”).^[7][2]

Earliest recorded meaning

A system of colloidal particles dispersed in air or a gas, such as mist, fog or smoke: 1923, in a paper by Whytlaw-Gray and others in the Proceedings of the Royal Society.^[2][3] Etymonline dates the word to 1919,^[7] and Merriam-Webster Unabridged gives 1918 as its first known use.^[4]

Semantic evolution

The word began as a term of physical chemistry;^[2][7] its commercial use, for a substance held under pressure and released as a fine spray by a propellant gas, dates from the 1940s.^[7][2] It is often used attributively, as in aerosol can and aerosol spray,^[2] and by extension names the container.^[9][5] A verb followed: in 1964 for dispersing something as an aerosol, compare aerosolize; from 1979 it was also used for spraying a surface or painting graffiti with an aerosol.^[2][4]

Timeline

• 1923 – a suspension of fine particles in air or a gas.^[2][3]
• 1944 – a substance under pressure released as a fine spray.^[2]
• 1964 – verb, to disperse as an aerosol.^[2][4]
• 1979 – verb, to spray with an aerosol; to spray-paint.^[2]

Meanings

Noun

1. A suspension of tiny solid or liquid particles in air or another gas, as in smoke, fog or mist.^[4][9][2]
2. A substance, such as paint or insecticide, packed under pressure with a propellant and released as a fine spray: an aerosol deodorant.^[9][4][2]
3. The container holding such a substance; a spray can.^[9][5]

Verb

1. To spray something with an aerosol, or to paint or write with spray paint: Someone had aerosolled slogans across the bridge.^[4][2][5]
2. To disperse a substance as an aerosol; to aerosolize.^[2]

Word family

• aerosolize
• aerosol bomb

Related words

• aero-
• sol
• solution
• hydrosol

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n o p q Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
4. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
5. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
6. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
7. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
8. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
9. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins