Soporiferous
Pronunciation : Sop`o*rif"er*ous
Part of Speech : a.
Etymology : [L. soparifer; sopor a heavy sleep + ferere to bring.]
Definition : Defn: Causing sleep; somniferous; soporific. "Soporiferous medicine." Swift. --- Sop`o*rif"er*ous*ly, adv. -- Sop`o*rif"er*ous*ness, n.
Source : Webster's Unabridged Dictionary, 1913