English dictionary



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English noun: selenium

1. selenium (substance) 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)


Synonymsatomic number 34, Se


Broader (hypernym)antioxidant, chemical element, element


Substance meronymfool's gold, iron pyrite, pyrite









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