Part of speech: Noun
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)
Categories: Antioxidant, Chemical element, Element
The word "selenium" comes from Ancient Greek σελήνη, which was borrowed from French sélénium.
Many Greek words entered English through Latin translations during the Renaissance.