Webster's 1913 Dictionary
HALF-TONE
HALF-TONE Half "-tone `, a.
Defn: Having, consisting of, or pertaining to, half tones; specif. (Photo-engraving ),
Defn: pertaining to or designating plates, processes, or the pictures made by them, in which gradation of tone in the photograph is reproduced by a graduated system of dotted and checkered spots, usually nearly invisible to the unaided eye, produced by the interposition between the camera and the object of a screen. The name alludes to the fact that this process was the first that was practically successful in reproducing the half tones of the photograph.
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