soporiferous Meaning, Definition & Usage

  1. adjective satellite sleep inducing
    hypnagogic; hypnogogic; soporific; somniferous; somnific.
  2. adjective satellite inducing mental lethargy
    soporific; narcotic.
    • a narcotic speech

WordNet

Sop`o*rif"er*ous adjective
Etymology
L. soparifer; sopor a heavy sleep + ferere to bring.
Definitions
  1. Causing sleep; somniferous; soporific. "Soporiferous medicine." Swift. --- Sop`o*rif"er*ous*ly, adv. -- Sop`o*rif"er*ous*ness, n.

Webster 1913