Lavoesium \La*v[oe]"si*um\, n. [NL., fr. Lavoisier, the
celebrated French chemist.] (Chem.)
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.
[1913 Webster +PJC] Lavolt