Thermotype
Pronunciation : Ther"mo*type
Part of Speech : n.
Etymology : [Thermo- + -type.]
Definition : Defn: A picture (as of a slice of wood) obtained by first wetting the object slightly with hydrochloric or dilute sulphuric acid, then taking an impression with a press, and next strongly heating this impression.
Source : Webster's Unabridged Dictionary, 1913