1. [ noun ] (chemistry) a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
Synonyms: atomic_number_34 selenium
Related terms: chemical_element antioxidant pyrite
2. [ noun ] the compass point midway between south and east; at 135 degrees
Synonyms: southeast sou'-east
Related terms: compass_point
Similar spelling:   sew