anesthetic

American  

[an-uhs-thet-ik] / ˌæn əsˈθɛt ɪk /

Or anaesthetic

noun

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

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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

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anesthetic Scientific  

/ ăn′ĭs-thĕt′ĭk /

1. A drug that temporarily depresses neuronal function, producing total or partial loss of sensation with or without the loss of consciousness.

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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.)

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Other Word Forms

Derived Forms

• semianesthetic
  adjective
• anesthetically
  adverb
• postanesthetic
  adjective
• nonanesthetic
  adjective

Etymology

Origin of anesthetic

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

Compare meaning

How does anesthetic compare to similar and commonly confused words? Explore the most common comparisons:

• anesthesia vs. anesthetic

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.

Example Sentences

Many clinicians point to the paracervical block—a simple, targeted injection of a local anesthetic around the cervix—as a way to greatly reduce pain during IUD insertions.

From Slate • Jun. 7, 2026

It is FDA-approved only as an anesthetic, and its use for psychiatric conditions is “off-label,” meaning its safety and efficacy hasn’t been vetted by the FDA for that purpose.

From The Wall Street Journal • Mar. 17, 2026

And on Saturday, she will undergo an anesthetic procedure and examination to fully assess her health and check whether she is suffering from low bone density because of malnutrition.

From Los Angeles Times • Jan. 4, 2025

According to the guidelines, the topical anesthetic lidocaine “might be useful for reducing patient pain” when injected as a local anesthetic or applied topically as a numbing gel, cream or spray.

From Salon • Aug. 14, 2024

I’d been under anesthetic for a dangerously long time.

From "Ugly" by Robert Hoge

Related Words

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