 | WordWeight : Weighing the Words |
| WordWeight : Weighing the Words |
Selenium
Pronunciation : Se*le"ni*um
Part of Speech : n.
Etymology : [NL., from Gr. tellurium (from L. tellus the earth), being, as it were, a companion to it.] (Chem.)
Definition : Defn: A nonmetallic element of the sulphur group, and analogous to sulphur in its compounds. It is found in small quantities with sulphur and some sulphur ores, and obtained in the free state as a dark reddish powder or crystalline mass, or as a dark metallic- looking substance. It exhibits under the action of light a remarkable variation in electric conductivity, and is used in certain electric apparatus. Symbol Se. Atomic weight 78.9.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder                               |