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anesthetic

American  
[an-uhs-thet-ik] / ˌæn əsˈθɛt ɪk /
Or anaesthetic

noun

  1. a substance that produces anesthesia, as halothane, procaine, or ether.


adjective

  1. pertaining to or causing physical insensibility.

    an anesthetic gas.

  2. physically insensitive.

    Halothane is used to produce an anesthetic state.

anesthetic British  
/ ˌænɪsˈθɛtɪk /

noun

  1. the usual US spelling of anaesthetic

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

anesthetic Scientific  
/ ăn′ĭs-thĕtĭk /
  1. A drug that temporarily depresses neuronal function, producing total or partial loss of sensation with or without the loss of consciousness.


anesthetic Cultural  
  1. A substance that causes loss of sensation or consciousness. With the aid of an anesthetic, people can undergo surgery without pain. (See general anesthetic and local anesthetic.)


Other Word Forms

Derived Forms

Etymology

Origin of anesthetic

1840–50, < Greek anaísthēt ( os ) without feeling, senseless + -ic; see an- 1, aesthetic

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Explanation

The next time you go to the dentist, make sure you know the word anesthetic. This drug causes a temporary loss of feeling, making it your best friend if the drill has to be used. The word anesthetic traces back to the Greek word anaisthēsia, from a combination of an-, meaning “without” and aisthēsis, meaning “sensation.” If you take an anesthetic that’s what happens: you are temporarily without sensation, meaning you feel no pain. A general anesthetic causes temporary unconsciousness and is often used during surgeries. A local anesthetic numbs just one area, such your mouth or a finger.

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