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Noun: onanism  'ow-nu,ni-zum
Usage: formal
  1. Manual stimulation of the genital organs (of yourself or another) for sexual pleasure
    - masturbation
  2. A method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation
    - coitus interruptus, withdrawal method, withdrawal, pulling out

Derived forms: onanisms

Type of: autoeroticism, autoerotism, birth control, birth prevention, family planning

Encyclopedia: Onanism