Spectrograph \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 Suppl.]