anaesthesia or (US) anesthesia /a-nəs-thēˈzi-ə or -zh(i-)ə/, also anaesthesis /-sis/

1. Loss of feeling
2. Insensibility, general or local

anaesthesiolˈogist (usu anesthesiolˈogist) noun

anaesthesiolˈogy (usuanesthesiolˈogy) noun (N American)

The science of administering anaesthetics

anaesthetic /-thetˈik or -thētˈik/ adjective

Producing or connected with insensibility

An anaesthetic drug or agent

anaesthetˈically adverb

anaesthetˈics singular noun

The science of anaesthesia

anaesthetist /-ēsˈthə-tist or -esˈ/ noun

A person who administers anaesthetics

anaesthetīzāˈtion or anaesthetīsāˈtion noun

anaesˈthetize or anaesˈthetise transitive verb

general anaesthetic

One which produces insensibility in the whole body, usu causing unconsciousness

local anaesthetic

One producing insensibility in only the relevant part of the body

• on the quiet
• on the rack
• on the rag
• on the rampage
• on the razzle
• on the rebound
• on the right tack
• on the right track
• on the rise
• on the road
• on the rocks
• on the ropes
• on the run
• on the safe side
• on the same wavelength as
• on the scale of
• on the shady side of
• on the shelf
• on the shop floor
• on the short side
• on the side
• on the side of the angels
• on the slate
• on the sly
• on the spin