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Webster 1913 Edition

Soporiferous

Sopˊo-rif′er-ous

,
Adj.
[L.
soparifer
;
sopor
a heavy sleep +
ferere
to bring.]
Causing sleep; somniferous; soporific.
“Soporiferous medicine.”
Swift.
–
Sopˊo-rif′er-ous-ly
,
adv.
–
Sopˊo-rif′er-ous-ness
,
Noun.

Webster 1828 Edition

Soporiferous

SOPORIF'EROUS

,
Adj.
[L. soporifer; sopor, asleep, and fero, to bring; from sopio, to lull to sleep.] Causing sleep, or tending to produce it; narcotic; opiate; anodyne; somniferous. The poppy pssesses soporiferous qualities.

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