What is the meaning of rhythm method of birth control?

Natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle. ).
- synonyms: rhythm method, rhythm, calendar method of birth control, calendar method

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APA	WordNet. (2010). rhythm method of birth control. Retrieved September 20, 2026, from http://smartdefine.org/rhythm_method_of_birth_control/definitions/1192372
Chicago	WordNet. 2010. "rhythm method of birth control" http://smartdefine.org/rhythm_method_of_birth_control/definitions/1192372 (accessed September 20, 2026).
Harvard	WordNet 2010, rhythm method of birth control, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/rhythm_method_of_birth_control/definitions/1192372>.
MLA	WordNet. "rhythm method of birth control" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/rhythm_method_of_birth_control/definitions/1192372>

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