Entry 1 sense Webster, 1913 Hectograph /hĕk'-təg-răfˌ/ · Hec·to·graph · IPA /hˈɛktəɡrˌæf/ 01 n. A contrivance for multiple copying, by means of a surface of gelatin softened with glycerin. 1. A contrivance for multiple copying, by means of a surface of gelatin softened with glycerin.