Selenium

Lunar.

Of or relating to the moon.

Množina: selenic acids

A strong acid (H2SeO4) analogous to sulfuric acid.

Množina: Selenicereuses

Mostly epiphytic climbing cacti that bloom at night; Also called: genus Selenicereus.

Množina: selenides

A binary compound of selenium with a more electropositive element or group

Containing or yielding selenium

Množina: Selenipedia

Genus of tall reedlike tropical American orchids; includes species with pods used locally as a substitute for vanilla; Also called: genus Selenipedium.

Množina: selenites

A variety of gypsum occurring in transparent crystals or crystalline masses

Pertaining to or affected by moon; of or pertaining to selenite.

Množina: selenia

ETYM New Lat., from Greek selene the moon. So called because of its chemical analogy to tellurium (from Latin tellus the earth), being, as it were, a companion to it.
A toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells.
Gray, nonmetallic element, symbol Se, atomic number 34, relative atomic mass 78.96. It belongs to the sulfur group and occurs in several allotropic forms that differ in their physical and chemical properties. It is an essential trace element in human nutrition.
Obtained from many sulfide ores and selenides, it is used as a red coloring for glass and enamel.
Because its electrical conductivity varies with the intensity of light, selenium is used extensively in photoelectric devices. It was discovered 1817 by Swedish chemist Jöns Berzelius and named for the Moon because its properties follow those of tellurium, whose name derives from Latin Tellus “Earth”.

Množina: selenium cells

A photoelectric cell that uses a strip of selenium.