tellurium, n. [NL., from L. tellus, -uris, the earth.].
A rare nonmetallic element, analogous to sulphur and selenium, occasionally found native as a substance of a silver-white metallic luster, but usually combined with metals, as with gold and silver in the mineral sylvanite, with mercury in Coloradoite, etc. Symbol Te. Atomic weight 125.2. [1913 Webster]
Graphic tellurium.
(Min.) See Sylvanite. --
Tellurium glance (Min.),
nagyagite; -- called also black tellurium.