What does anesthetise mean?
Anesthetise is a verb meaning to make a person, animal, or part of the body unable to feel pain, typically by administering an anaesthetic drug such as ether, chloroform, or a modern local or general anaesthetic. It is the everyday verb of operating theatres: surgeons cannot begin work until the patient has been anesthetised, and dentists routinely anesthetise a small area of the mouth before treatment. Beyond medicine, the word carries a well-established figurative sense: repeated exposure to distressing news or violence can be said to anesthetise people emotionally, dulling their natural reactions until they no longer register what would otherwise shock them. The American spelling drops the "ae" found in the traditional British form "anaesthetise". Derived from Greek roots meaning "without sensation", the word entered English in the mid-nineteenth century, when the discovery of surgical anaesthesia transformed medicine from an endurance test into a science of controlled, painless intervention.
To administer an anaesthetic so that a person, animal, or part of the body loses sensation and cannot feel pain.
"The veterinary team anesthetised the dog before performing the X-ray."
Chiefly used in medical and veterinary contexts; the British form is traditionally spelled "anaesthetise".
To dull someone's emotional sensitivity or awareness so that they react less strongly to events.
"Years of war reporting had anesthetised him to scenes of devastation."
Figurative use carries no medical implication and often connotes a loss of healthy empathy.
Before the 1840s there was no way to anesthetise a patient at all — surgery was a race against screaming, and the discovery that ether could erase pain changed medicine overnight.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of anesthetise
Anesthetise derives from the Greek "anaisthētos", meaning "without sensation", formed from "an-" (without) plus "aisthēsis" (sensation or feeling), itself related to "aisthētēr" (one who perceives). The word entered English in the mid-nineteenth century, coined in the wake of the discovery of surgical anaesthesia around the 1840s, when ether and chloroform first made painless operations possible. It shares this Greek root with cognates such as anaesthesia, synaesthesia, and aesthetic, all tracing back to the same ancient vocabulary of perception and feeling.
Related word forms
How anesthetise is actually used
This spelling is chiefly American and increasingly accepted in British usage as well; British texts traditionally use "anaesthetise". The verb is standard in medical writing but also appears figuratively to describe emotional numbing. The agent noun is "anesthetist" (US) / "anaesthetist" (UK).
Easily confused with anesthetise
"Anaesthetise" is the standard British spelling with the digraph "ae", while "anesthetise" is the American spelling of the same word — they are not different words in meaning.
"Anaesthesia/anesthesia" is the noun referring to the state of insensitivity to pain, whereas "anesthetise" is the verb describing the act of producing that state.