Pronunciation: (sop"u-rif'ik, sō"pu-), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/soporific.html on line 77 [key]
1. causing or tending to cause sleep.
2. pertaining to or characterized by sleep or sleepiness; sleepy; drowsy.
something that causes sleep, as a medicine or drug.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.