| Calendar Method | กินตามวันในปฎิทิน [การแพทย์] |
| rhythm method of birth control | (n) 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), Syn. calendar method of birth control, rhythm method, calendar method, rhythm |