D defs.my
Entry 1 sense Webster, 1913

Lavœsium

· La·vœ·si·um · IPA
01 n. A supposed new metallic element, which was said to have been discovered in pyrites, and some other minerals, and to be of a silver-white co…
  1. 1.
    A supposed new metallic element, which was said to have been discovered in pyrites, and some other minerals, and to be of a silver-white color, and malleable. It is not currently (1998) a recognized element.(Chem.)