Ivorytype
Pronunciation : I"vo*ry*type`
Part of Speech : n.
Definition : Defn: A picture produced by superposing a very light print, rendered translucent by varnish, and tinted upon the back, upon a stronger print, so as to give the effect of a photograph in natural colors; -- called also hellenotype. Knight.
(photog.)
Source : Webster's Unabridged Dictionary, 1913