selenium — 英語辞典

名詞

1. A nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.

   用法

   • 不可算
   • usually

   上位語

   chalcogen

   例文

   Pluck almost any cell from your body and it will have a million or more selenium atoms in it.

2. An atom of this element.

   用法

   • 不可算
   • usually

名詞

1. 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)

   同義語

   Seatomic number 34

   上位語

   chemical elementelementantioxidant