Definify.com
Webster 1913 Edition
Vesbium
Ves′bi-um
,Noun.
[NL., from L.
Vesuvius
, contr. Vesbius
, Vesuvius.] (Chem.)
A rare metallic element of which little is known. It is said by Scacchi to have been extracted from a yellowish incrustation from the cracks of a Vesuvian lava erupted in 1631.
It is not a recognized element. Actual identity?