mimeographing is mimeograph's Present Participle

mimeograph

Plural Form：mimeographs Past Participle：mimeographed Present Participle：mimeographing

E-C

n.	1. (商标名)滚筒油印机;油印品
v.	1. 用滚筒油印机印刷,油印

n.	1. a machine that prints copies onto paper from an inked stencil rotated on a cylinder across the pages 2. a copy made on a mimeograph
v.	1. to make a copy of a document using a mimeograph