What does vaporising mean?
Vaporising means converting a liquid into vapour or becoming vapour, usually as a result of heating. The process is distinct from simply describing liquid water as wet or cool: once a liquid vaporises, it becomes a gas that can mix with the surrounding air. The word is especially useful in scientific, culinary, industrial, and safety-related contexts, such as describing alcohol turning into vapour before being ignited or a liquid passing through a heated coil. In British English, “vaporising” is the usual spelling, while American English generally uses “vaporizing.” It is related to “vaporise,” “vapour,” and the more technical term “volatilise.” Although “evaporating” is closely related, it often emphasizes a natural change at a liquid’s surface, whereas “vaporising” can suggest deliberate heating or a clearly observed phase change.
verbTo convert a liquid into vapour, especially by heating it. It can also mean to become vapour or disperse into the air in the form of vapour.
- Converting a liquid into vapour, especially through heating.
- Becoming vapour or dispersing into the air as vapour.
"The liquid began vaporising as it passed through the heated coil."
"The alcohol is vaporising before it reaches the flame."
"Mist lingered over the lake as the water vaporised in the morning sun."
The spelling gives a geographical clue: British English uses “vaporising,” while American English normally spells it “vaporizing.”
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of vaporising
The English word is built on “vapor,” with the British verb suffix “-ise”; American English typically uses “-ize” in the corresponding form. “Vapor” derives from Latin, where it referred to steam or vapour, and related English words such as “vaporous” continue the same etymological tradition. The British and American spellings developed through differing conventions for verbs ending in -ise or -ize.
Related word forms
How vaporising is actually used
The word is most common in British English, where the related noun is usually spelled “vapour”; American English generally uses “vaporizing” and “vapor.” It is especially appropriate in technical, scientific, and industrial contexts, though it is also used in ordinary descriptions of heated liquids.
Easily confused with vaporising
Vaporising often suggests deliberately converting a liquid into vapour, whereas evaporating more commonly describes a liquid changing into vapour naturally, especially from its surface.