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. ).
- synonyms: Se, atomic number 34
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). selenium. Retrieved September 21, 2026, from http://smartdefine.org/selenium/definitions/1247693 |
| Chicago | WordNet. 2010. "selenium" http://smartdefine.org/selenium/definitions/1247693 (accessed September 21, 2026). |
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| MLA | WordNet. "selenium" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/selenium/definitions/1247693> |