atomic number 34
| 1. |
(noun) 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) |
|
Synonyms: Se, selenium |
|
Related Words: chemical element, element |
|
|