Word Origin & History
sylvan1565, "deity of the woods," from M.Fr. sylvain, from L. silvanus "pertaining to wood or forest" (originally only in silvanæ "goddesses of the woods"), from silva "wood, forest, grove," of unknown origin. Adj. meaning "of the woods" is attested from 1580. Silvanus was used by the Romans as the proper
name of a god of woods and fields, identified with Pan. Spelling with -y- infl. by Gk. hyle "forest," from which the L. word was supposed to derive.