Entry 2 senses · 2 variants Webster, 1913 Mimeograph /mĭm'-ē-əg-răfˌ/ · Mim·e·o·graph · IPA /mˈɪmiːəɡrˌæf/ n. v. t. 01 n. A copying device that uses a stencil through which ink is pressed; it was invented by Edison. 1. A copying device that uses a stencil through which ink is pressed; it was invented by Edison. Syn. mimeo, mimeograph machine, Roneo. 02 v. t. to make copies of using a mimeograph; as, She mimeographed the syllabus. 1. to make copies of using a mimeograph; as, She mimeographed the syllabus. Syn. mimeo.