What does anesthetics mean?
Anesthetics are substances that temporarily abolish sensation, allowing medical and dental procedures to be performed without pain. They fall broadly into two categories: general anesthetics, which render a patient unconscious, and local anesthetics, which numb a specific region of the body while the patient remains awake. The word is the plural of 'anesthetic' and derives ultimately from Greek roots meaning 'without sensation.' Before their introduction in the mid-nineteenth century, surgery was a brutal ordeal limited by how much agony a patient could endure; the arrival of ether and chloroform revolutionized medicine almost overnight. Today anesthetics are among the most heavily studied and carefully dosed drugs in clinical use, administered by specialist physicians known as anesthesiologists or anesthetists. The term appears mainly in medical, scientific, and historical writing, and it should not be confused with 'aesthetics,' which concerns beauty rather than numbness.
nounSubstances that produce a loss of sensation or consciousness, used to permit medical or surgical procedures without pain; the plural form of 'anesthetic'.
- Drugs that induce loss of sensation, with or without loss of consciousness, used during medical procedures.
- The field or practice relating to the administration of such substances (as in 'the study of anesthetics').
"Modern surgery depends on carefully administered anesthetics to keep patients pain-free and unconscious."
"Dentists commonly use local anesthetics like lidocaine before filling a cavity."
"The discovery of effective anesthetics in the nineteenth century transformed surgery from a last resort into a routine practice."
Standard English plural, formed simply by adding -s. In British English the spelling is 'anaesthetics'.
"The veterinary team stocked a range of anesthetics suitable for animals of every size."
When ether anesthesia debuted in 1846, surgeons called the mystery compound 'Letheon' — after the mythical river of forgetfulness — hoping to hide its identity as mere alcohol's humble cousin.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does anesthetics come from?
The word traces back to the Greek 'anaisthēsia,' meaning 'insensibility,' formed from 'an-' (without) and 'aisthēsis' (sensation or perception). It entered English via New Latin in the sixteenth century in a philosophical sense referring to the absence of feeling, and was revived in the 1840s specifically for drugs that block pain after the introduction of ether anesthesia. Cognates sharing the same root include 'aesthetic' (relating to perception and beauty), 'synesthesia' (senses blending together), and 'anesthesia' itself.
Related word forms
How anesthetics is actually used
Always used in formal, clinical, or scientific contexts; in everyday speech people more often say 'anesthetic' even when referring to multiple agents. The British spelling is 'anaesthetics', with the extra 'a'.
Easily confused with anesthetics
'Aesthetics' refers to the philosophy or appreciation of beauty and art, while 'anesthetics' are drugs that eliminate sensation or pain.