| 单词 | selenium |
| 释义 | selenium (once / 23878 pages) n WORD FAMILY selenium USAGE EXAMPLESOfficials work with landowners to reduce selenium levels. Washington Times(Dec 31, 2016) It contains arsenic, selenium, mercury and other pollutants. Washington Times(Dec 21, 2016) There’s a game-changer in the seafood and mercury debate — selenium. Seattle Times(Dec 14, 2016) 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) Syn|Hyper Se, atomic number 34 chemical element, element any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter antioxidantsubstance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides |
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