What does cavitating mean?
Cavitating is a technical present-participle form of cavitate, meaning to form or undergo cavitation—the creation of cavities or bubbles within a material. In fluid mechanics, a cavitating flow, propeller, or pump develops vapor-filled cavities in a liquid; when those bubbles collapse, they can produce noise, vibration, erosion, and serious damage. In medicine, a cavitating lesion is one that develops a hollow space as tissue is destroyed, a pattern associated with conditions such as tuberculosis and certain lung cancers. As a verb, cavitating describes a component or process that induces this phenomenon. The word is primarily used in engineering, physics, and medicine rather than general conversation. It is useful because it names a distinctive physical process whose effects can be far more consequential than the bubbles that cause them.
Forming or undergoing cavities; especially, producing or experiencing cavitation in a liquid or developing a cavity in tissue.
"Cavitating flow can cause severe vibration in a pump or propeller."
The engineering and medical senses are distinct but parallel: in engineering, cavities form within a liquid; in medicine, a lesion develops a hollow space through tissue breakdown.
To induce or undergo cavitation, especially the formation and possible collapse of vapor cavities in a liquid.
"The propeller was cavitating badly in the high-speed water flow."
A cavitating propeller can turn smooth flow into a cloud of collapsing bubbles whose sudden impacts can pit and erode metal.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does cavitating come from?
Cavitating is the English present participle of cavitate. The English verb was borrowed from Latin cavitare, “to hollow out,” which developed through cavitas, “a hollow or cavity,” from cavus, “hollow.” The same Latin family produced or underlies related English words such as cavity, cavern, cave, and excavation, all associated with the idea of a hollow space.
Related word forms
How cavitating is actually used
Technical and specialist, especially in fluid mechanics, machinery, and diagnostic medicine. In engineering it refers to the formation of vapor cavities in a liquid; in medicine it refers to a lesion that develops a cavity through tissue breakdown. The word can suggest consequences more serious than ordinary bubbling because the collapse of vapor cavities can produce noise, vibration, and material damage.
Easily confused with cavitating
Cavitational characterizes a flow, regime, or effect associated with cavitation, whereas cavitating describes an object or process actually producing or undergoing cavity formation.