a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
the compass point midway between south and east; at 135 degrees
Abbreviation of southeast.
A type of ancient Chinese plucked zither.
Initialism of single ended.
Initialism of Stack Exchange.