Definition of anaesthesia in English:


Line breaks: an¦aes|the¦sia
Pronunciation: /ˌanɪsˈθiːzɪə
(US anesthesia)


[mass noun]
  • Insensitivity to pain, especially as artificially induced by the administration of gases or the injection of drugs before surgical operations: during anaesthesia body temperature falls due to the effect of drugs modern clinical anaesthesia uses low concentrations of volatile anaesthetics
    More example sentences
    • We speculated that the effects of surgical injury and anaesthesia might be as important as the use of cardiopulmonary bypass in causing impairment.
    • It is also possible to induce anaesthesia with anaesthetic gases, breathed through a mask.
    • Body piercing is traditionally done without any anesthesia to dull the pain.


early 18th century: modern Latin, from Greek anaisthēsia, from an- 'without' + aisthēsis 'sensation'.

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