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sedation

American  
[si-day-shuhn] / sɪˈdeɪ ʃən /

noun

Medicine/Medical.
  • sedations
    plural
  1. the calming of mental excitement or abatement of physiological function, especially by the administration of a drug.

  2. the state so induced.


sedation British  
/ sɪˈdeɪʃən /

noun

  1. a state of calm or reduced nervous activity

  2. the administration of a sedative

"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

Other Word Forms

Derived Forms

Inflected Forms

Nouns


Etymology

Origin of sedation

First recorded in 1535–45; from Latin sēdātiōn-, stem of sēdātiō; equivalent to sedate + -ion


Explanation

Sedation is either the state of being relaxed or sleepy because of a drug, or the act of drugging someone with a sedative. Sedatives are drugs that people take to relax or fall asleep, and sedation has two related meanings. Sedation can be the condition of someone who has taken a sedative. You're in a state of sedation if you're relaxed, mellow, sleepy, or low-key because of a drug. Also, sedation can be the action of doctors or nurses in calming someone through drugs. A nurse may put a patient under sedation if they can't sleep. Sedation is an act of drugging.

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Vocabulary lists containing sedation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

These are medications that cause a lot of weight gain, a lot of sedation.

From Barron's ● Oct. 6, 2026

About 10 days after the attack, doctors reduced her sedation and she emerged from her coma.

From Barron's ● Aug. 31, 2026

The treatment can stop decay without drilling, injections, or sedation.

From Science Daily ● Jul. 29, 2026

Tilly said she thought the sedation and memory problems she experienced afterwards might explain why she could not recall being awake.

From BBC ● Jul. 23, 2026

But I had been kept under heavy sedation for the first few days and hadn’t managed to speak to my parents.

From "Ugly" by Robert Hoge

Maybe we are not so interested in perfection and its sedations after all.

From New York Times ● Nov. 11, 2021

For example, she says, using general anesthesia for a colonoscopy when lesser sedations are sufficient can add thousands of dollars to a patient’s bill.

From BusinessWeek ● Nov. 20, 2012

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