onanism
Concise Oxford English Dictionary © 2008 Oxford University Press:
onanism /ˈəʊnənɪz(ə)m/
▶noun formal
- 1 masturbation.
- 2 coitus interruptus.
– derivatives
onanist noun,
onanistic adjective.
onanist noun,
onanistic adjective.
– origin C18: from Fr. onanisme or mod. L. onanismus, from Onan, who practised coitus interruptus (Gen. 38:9).
'onanism' also found in these Oxford entries:

