Definition of romanium in US English:

romanium

noun

  • An aluminium alloy typically containing small amounts of nickel, tin, tungsten, and other metals, and formerly common in bicycle frames.

Origin

Late 19th century; earliest use found in The Cyclist. From the name of Reinhard Isidore Roman (fl. 1890s), metallurgical chemist, of London + -ium.

Pronunciation

romanium

/rə(ʊ)ˈmeɪnɪəm/