Spec"tro*graph (?), n. [Spectrum + graph.] (Physics)
(a)
An apparatus for photographing or mapping a spectrum.
(b)
A photograph or picture of a spectrum. -- Spec`tro*graph"ic (#), a. -- Spec`tro*graph"ic*al*ly (#), adv. -- Spec*trog"ra*phy (#), n.
© Webster 1913