What does inflator mean?
An inflator is a device that introduces air or another gas into an object so that its volume or internal pressure increases. It is the standard term for pumps and compressors used on tires, bicycle tubes, balloons, inflatable toys, and similar products, with “tire inflator” and “electric inflator” among its common combinations. The word is more specialized than the general term “pump” because it emphasizes the action of inflation rather than the broader movement of liquid or gas. Although inflators are most often machines, the term can also denote a person or thing that inflates something, though that sense is much less common. Understanding the word is useful in sporting, automotive, packaging, and retail contexts, where distinguishing a small manual inflator from an electric or compressed-air model can matter.
nounA device that supplies air or another gas to increase the pressure or volume of something, especially a tire, bicycle tube, or inflatable object. More rarely, the term can mean a person or thing that inflates something.
- A device for supplying air or another gas to increase the pressure or volume of something.
- A person or thing that inflates something.
"She used the portable inflator to check the pressure in the bicycle tires."
"The electric inflator stopped working halfway through filling the tires."
"The toy was packaged with a hand pump, but most owners use a separate inflator."
The plural is used when referring to multiple inflation devices.
"The workshop keeps several bicycle-tire inflators near the entrance."
An inflator is the little machine that gives a bicycle tire, a ball, or an inflatable toy its puff.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does inflator come from?
Inflator was formed in English from “inflate” and the suffix “-or,” which can identify an agent or instrument. “Inflate” comes through French from Latin inflare, “to inflate” or “blow into,” formed from in- and flare, “to blow.” The same Latin foundation also produced words such as “inflation” and “flatus,” and the English agentive or instrumental suffix underlies forms like “creator” and “operator.”
Related word forms
How inflator is actually used
The word is especially common in technical, sporting, and retail contexts. In British English, “tyre” is normally used, while “tire” is standard in American English. Its use for a person is comparatively rare.