| natural family planning method | วิธีวางแผนครอบครัวตามธรรมชาติ [ประชากรศาสตร์ ๔ ก.พ. ๒๕๔๕] |
| natural family planning | (n) any of several methods of family planning that do not involve sterilization or contraceptive devices or drugs; coitus is avoided during the fertile time of a woman's menstrual cycle |
| natural family | n. (Biol.) a group of living organisms classed as a |