- the calming of mental excitement or abatement of physiological function, especially by the administration of a drug.
- the state so induced.
- a state of calm or reduced nervous activity
- the administration of a sedative
n.early 15c., “alleviation of pain;” 1540s, “act of making calm,” from Middle French sédation and directly from Latin sedationem (nominative sedatio) “a quieting, assuaging, a calming,” noun of action from past participle stem of sedare (see sedate (adj.)). n.
- Reduction of anxiety, stress, irritability, or excitement by administration of a sedative agent or drug.
- The state or condition induced by a sedative.