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.

Sop`o*rif"ic, n. A medicine, drug, plant, or other agent that has the quality of inducing sleep; a narcotic.

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.

Sop`o*rif"ic, n. A medicine, drug, plant, or other agent that has the quality of inducing sleep; a narcotic.

• something inducing sleep, esp. a drug
        The doctor prescribed a soporific to help him sleep.
  
• tending to induce sleep
        The professor delivered a soporific lecture.