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).

synoniemen: atomic number 34, selenium.

Nederlands: seleen, selenium
Pools: selen, Se

The compass point midway between south and east; at 135 degrees.

synoniemen: sou'-east, southeast, southeastward.

Nederlands: zuidoosten, zuidoostenwind, zuidooster
Pools: południowy wschód