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selenium
 
Noun selenium has 1 sense
  1. selenium, Se, atomic number 34 - a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
    --1 is a kind of chemical element, element; antioxidant
    --1 is a substance of pyrite, iron pyrite, fool's gold
selenarctos thibetanus selene selene setapinnis selene vomer selenic acid selenicereus selenicereus grandiflorus selenipedium selenium selenium cell selenolatry seleperum seles seleucus seleucus i seleucus i nicator self- awareness

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