from
The Collaborative International Dictionary of English v.0.48
Epidote \Ep"i*dote\, n. [Gr. ? to give besides; ? over + ? to
give: cf. F. ['e]pidote. So named from the enlargement of the
base of the primary, in some of the secondary forms.] (Min.)
A mineral, commonly of a yellowish green (pistachio) color,
occurring granular, massive, columnar, and in monoclinic
crystals. It is a silicate of alumina, lime, and oxide of
iron, or manganese.
[1913 Webster]
Note: The Epidote group includes ordinary epidote, zoisite or
{lime epidote}, piedmontite or {manganese epidote},
allanite or {cerium epidote}.
[1913 Webster]