Early 18th century; earliest use found in Ephraim Chambers (?1680–1740), encyclopaedist. Alteration of mastupration after classical Latin manus hand, founded on the proposed etymology from manū + stuprārestuprate.
Definition of manustupration in US English:
manustupration
nounˌmanəstjʊˈpreɪʃn
rare, historical, archaic
Masturbation.
Origin
Early 18th century; earliest use found in Ephraim Chambers (?1680–1740), encyclopaedist. Alteration of mastupration after classical Latin manus hand, founded on the proposed etymology from manū + stuprāre stuprate.