Etymology
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sedation (n.)

early 15c. (Chauliac), sedacioun, "act or process of alleviation of pain;" 1540s, "act of making calm," from French sédation and directly from Latin sedationem (nominative sedatio) "a quieting, assuaging, a calming," noun of action from past-participle stem of sedare "to settle, make calm," causative of sedere "to sit" (from PIE root *sed- (1) "to sit").

updated on April 06, 2022

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Definitions of sedation from WordNet

sedation (n.)
a state of reduced excitement or anxiety that is induced by the administrative of a sedative agent;
sedation (n.)
the administration of a sedative agent or drug;
Synonyms: drugging
From wordnet.princeton.edu, not affiliated with etymonline.