WordNet sense 1 (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)):

selenium

WordNet sense 2 (the compass point midway between south and east; at 135 degrees):

southeast, southeastward, sou'-east