Definify.com
Webster 1913 Edition
Osmious
Os′mi-ous
,Adj.
(Chem.)
Denoting those compounds of osmium in which the element has a valence relatively lower than in the
osmic
compounds; as,
. osmious
chloride[Written also
osmous
.] Osmious acid
(Chem.)
, an acid derived from osmium, analogous to sulphurous acid, and forming unstable salts. It is a brown amorphous substance.