Etymology
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autoclave (n.)

"stewing apparatus the lid of which is kept closed and tight by the steam itself," 1847, from French (1821), literally "self-locking," from auto- "self" (see auto-) + clave, from Latin clavis "key" (from PIE root *klau- "hook").

updated on September 15, 2018

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Definitions of autoclave from WordNet
1
autoclave (v.)
subject to the action of an autoclave;
2
autoclave (n.)
a device for heating substances above their boiling point; used to manufacture chemicals or to sterilize surgical instruments;
Synonyms: sterilizer / steriliser
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.