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1670s, "a drawing on strong paper (used as a model for another work)," from French carton, from Italian cartone "strong, heavy paper, pasteboard," thus "preliminary sketches made by artists on such paper" (see carton). Extension to comical drawings in newspapers and magazines is 1843.
Punch has the benevolence to announce, that in an early number of his ensuing Volume he will astonish the Parliamentary Committee by the publication of several exquisite designs, to be called Punch's Cartoons! ["Punch," June 24, 1843]Also see -oon.
1864 (implied in cartooned), from cartoon (n.). Related: Cartooning.