selenium, Se, atomic number
(noun) 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)
Source: WordNet® 3.1
selenium (usually uncountable, plural seleniums)
A nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.
Hypernym: chalcogen
A single atom of this element.
• Melusine, emulsine, semilune, seminule
Source: Wiktionary
Se*le"ni*um, n. Etym: [NL., from Gr. tellurium (from L. tellus the earth), being, as it were, a companion to it.] (Chem.)
Definition: 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 Edition
24 April 2025
(noun) an obsolete term for the network of viscous material in the cell nucleus on which the chromatin granules were thought to be suspended
Coffee is a brewed drink prepared from roasted coffee beans, the seeds of berries from certain Coffea species. When coffee berries turn from green to bright red – indicating ripeness – they are picked, processed, and dried. Dried coffee seeds are roasted to varying degrees, depending on the desired flavor.
