Aerosol

Part of speech: noun

Pronunciation: /ˈɛɚ.əˌsɔl/

Definitions

1. A colloidal suspension of fine solid particles or liquid droplets in a gas is commonly used in various applications such as sprays or atmospheric phenomena
2. A system consisting of tiny liquid or solid particles dispersed in a gas, which can be found in products like deodorants and in environmental contexts
3. An airborne mixture of microscopic particles or droplets that can affect air quality and are often utilized in medical and cosmetic formulations

Etymology: The "sol" in "aerosol" is a shortened form of "solution," which makes the word a clipped compound rather than a single coinage with ancient roots. The first half, "aero-", comes from the Ancient Greek "aēr," meaning air, and has been used in English for the air-related sense that gives the word its meaning. The second half traces back through Latin "solūtiō," meaning a loosening or dissolving, which passed through Old French "solucion" into Middle English as "solucioun" and later became "solution." The combined word describes a substance in which tiny particles are dispersed in air, much like a liquid solution disperses a solid in a liquid. Because "sol" in this sense was a clipped form of a word that once meant dissolving apart, "aerosol" literally names a mist of fine particles held loosely in the air. The compound is a modern formation, built from classical parts, rather than an ancient term.

Synonyms: mist, spray, fog, vapor, emulsion