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)
<noun.substance>
<noun.substance>
| Se |
|
| atomic number 34 |
|
| selenium |
|
semantic pointers
hypernym
substance holonym