se

• n.
  • 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)

    同义词： selenium atomic number 34

  • the compass point midway between south and east; at 135 degrees

    同义词： southeast sou'-east southeastward

以上来源于: WordNet