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Noun: calendar method of birth control
  1. 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)
    - rhythm method of birth control, rhythm method, rhythm, calendar method

Derived forms: calendar methods of birth control

Type of: natural family planning

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Caledonia
Caledonian
Caledonian Canal
calefacient
calefaction
calefactive
calefactory
calendar
calendar day
calendar method
calendar method of birth control
calendar month
calendar week
calendar year
calender
calendered
calendric
calendrical
calends
calendula
Calendula officinalis