| Engelsk substantiv: selenium | 
| 1. | selenium (om masse eller substans) 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) | 
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 | Ord med samme betydning (synonymer) | atomic number 34, Se | 
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 | Mindre spesifikke uttrykk | antioxidant, chemical element, element | 
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 | Vedrørende disse overordnede uttrykkene | fool's gold, iron pyrite, pyrite | 
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