Anaesthesia
/ˌæn.əsˈθiː.zi.ə/noun
A state of controlled loss of sensation, especially one induced for medical procedures.
Did you know?Anaesthesia comes from Greek roots meaning “without sensation,” and its opposite, *aesthesia*, is the same root family behind words like aesthetic—proof that feeling, beauty, and numbness all share an ancient linguistic spine.
Etymological Timeline
Ancient Greek
Greek
anaisthēsia
“lack of sensation; insensibility”
Late Greek
Greek
anaisthēsis
“loss of sensation, numbness”
18th Century
New Latin
anaesthesia
“insensibility to feeling or sensation”
19th Century
English
anaesthesia
“artificially induced insensibility, especially for surgery”
Modern English
English
anaesthesia
“controlled loss of sensation, especially in medicine”
Explore more surprising origins