Meaning : 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).
Synonyms : atomic number 34, selenium
Meaning : The compass point midway between south and east. At 135 degrees.
Synonyms : sou'-east, southeast, southeastward