English dictionary



Hint: In most browsers you can lookup any word by double click it.

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









Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
2025 onlineordbog.dk