マスリウム

noun

masurium; technetium

Obsolete name for the element technetium (atomic number 43). Used historically before the element was officially named technetium. Now only encountered in historical or scientific context.

See also: テクネチウム

• マスリウムは、かつてテクネチウムと呼よばれる前まえに使つかわれていた元げん素そ名めいです。

  Masurium is the element name that was used before it came to be called technetium.