Hypertext Webster Gateway: "soporific"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Soporific \Sop`o*rif"ic\ (?; 277), a. [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.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Soporific \Sop`o*rif"ic\, n.
A medicine, drug, plant, or other agent that has the quality
of inducing sleep; a narcotic.
From WordNet (r) 1.7 (wn)
soporific
adj 1: sleep inducing [syn: {soporiferous}, {somniferous}, {somnific},
{hypnogogic}, {hypnagogic}]
2: inducing mental lethargy; "a narcotic speech" [syn: {narcotic},
{soporiferous}]
n : a drug that induces sleep [syn: {hypnotic}]
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