What does flotation mean?
Flotation is the condition or process of floating — of remaining at or near the surface of a liquid rather than sinking. It describes both a physical state (the flotation of a boat on water) and engineered capability, as in flotation devices, life jackets, and flotation tanks designed for sensory deprivation or therapy. The word rests on the principle of buoyancy, famously articulated by Archimedes: an object immersed in fluid experiences an upward force equal to the weight of the fluid it displaces. In British English, flotation has a second, entirely different meaning in finance, where it denotes the process of launching a company onto a public stock exchange by issuing shares to investors. Connotations are generally practical and neutral — safety, engineering, and commerce — though flotation therapy lends the word a more contemporary wellness association. Its reliability as a term makes it common across shipping, swimming, mining (where froth flotation separates minerals), and corporate finance alike.
nounThe action, process, or capacity of floating or remaining at the surface of a liquid without sinking; also, the process of launching a company by offering its shares to the public for the first time.
- The state or ability of floating on or remaining suspended in a liquid, especially through buoyancy.
- The act or process of financing a company by issuing shares to the public (chiefly British financial usage).
"The life jacket's flotation kept the swimmer at the surface until help arrived."
"The divers wore vests fitted with extra flotation for safety during the salvage operation."
"The company raised £200 million in its stock market flotation last autumn."
Every ship's seaworthiness depends on a principle Archimedes worked out in his bathtub over two thousand years before anyone called it flotation.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of flotation
Flotation derives from 'float', which came into Middle English from Old French 'floter', itself rooted in Frankish * flotōn, related to floating on water; ultimately it traces to the Proto-Germanic root behind words like fleet and flotsam. The suffix '-ation' marks it as a noun of action, formed much later than the verb. Cognate forms appear across Romance and Germanic languages, including Spanish 'flota' (fleet) and the Italian-derived 'flotilla'. The variant spelling 'floatation' arose in the nineteenth century but never displaced the older, standard form.
How flotation is actually used
In everyday and technical contexts, flotation refers to physical buoyancy; note that the related verb is 'float', not 'flotate'. In British financial journalism, 'flotation' specifically means a company going public (an IPO), whereas American English typically calls this 'going public'. The spelling 'floatation' is a recognized variant but less common.
Easily confused with flotation
Floatation is simply a variant spelling of the same word; 'flotation' is the standard form in both British and US English, while 'floatation' persists mainly because of the trade name 'Floatation' used for sensory-deprivation tanks.