What does aerosolise mean?
Aerosolise is a verb meaning to transform a liquid or solid substance into a fine spray of microscopic particles suspended in the air. The process is central to modern medicine: nebulisers and inhalers aerosolise medications such as bronchodilators and antibiotics so they can be breathed directly into the lungs, delivering treatment efficiently to the respiratory tract. Beyond medicine, the term appears in industrial contexts such as spray painting, perfumery, and agricultural spraying, and it became especially prominent during the COVID-19 pandemic, when scientists debated whether viruses could be aerosolised and transmitted through the air. The word derives from 'aerosol', itself coined in the early twentieth century from Greek roots meaning air and solution. Its American spelling is 'aerosolize'. Precise and technical in register, aerosolise conveys a specific physical transformation rather than simple evaporation, distinguishing it from related terms like vaporise.
verbTo convert a liquid or solid substance into a fine spray or suspension of tiny particles in the air, typically using a pressurised container or atomising device. It can also describe the dispersal of microorganisms or particles through the air.
- To convert a substance into a fine spray or airborne suspension of particles, especially for medical inhalation or industrial application.
- (Of pathogens or other particles) To become dispersed through the air as an aerosol.
"The nurse aerosolised the bronchodilator so the patient could inhale it directly into his lungs."
"Doctors aerosolised the antibiotic so it could be delivered straight to the patient's lungs."
"Laboratory studies showed that the virus could be aerosolised during certain medical procedures."
The word 'aerosol' was coined in the 1920s by US scientists studying insecticide sprays — and 'aerosolise' followed it into medicine, where it now describes everything from asthma inhalers to how viruses travel through the air.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of aerosolise
Aerosolise derives from 'aerosol', a term coined in the early twentieth century (commonly credited to American scientists working on insecticide sprays around the 1920s), combining the Greek 'aero-' (air) with 'sol', short for solution, describing colloidal particles dispersed in gas. The verb form emerged as the technology spread into medicine and industry. Related words sharing the 'aero-' root include aeroplane and aerate.
Related word forms
How aerosolise is actually used
Aerosolise is chiefly used in medical, scientific, and technical contexts. The spelling 'aerosolize' is standard in American English, while 'aerosolise' is preferred in British English. It gained wider public familiarity during the COVID-19 pandemic through discussions of airborne virus transmission.
Easily confused with aerosolise
Vaporise means to turn a substance entirely into gas or vapour, whereas aerosolise means to suspend it as fine droplets or particles within air without necessarily changing its state.