soporific Meaning, Definition & Usage

noun a drug that induces sleep
hypnotic.
adjective satellite sleep inducing
hypnagogic; hypnogogic; soporiferous; somniferous; somnific.
adjective satellite inducing mental lethargy
soporiferous; narcotic.
- a narcotic speech

L. sopor a heavy sleep (akin to somnus sleep) + facere to make. See Somnolent, Fact.

Causing sleep; tending to cause sleep; soporiferous; as, the soporific virtues of opium. Syn. -- Somniferous; narcotic; opiate; anodyne.

A medicine, drug, plant, or other agent that has the quality of inducing sleep; a narcotic.