Word of the week: Onanism

Onanism^1,2, n. (ō'nə-nĭz'əm)

1. withdrawal in sexual intercourse before ejaculation

2. masturbation [after Onan: see Genesis 38:9]

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1. Definition source: {http://www.thefreedictionary.com/onanism}.
2. I stumbled on this term while reading The computer game as fictional form.