periodThe most fertile period (the time with the highest likelihood of pregnancy resulting from sexual intercourse) covers the time from some 5 days before until 1–2 days ... |
Menstrual cycle - Wikipedia, the free encyclopediaPeriod may mean a full stop: a punctuation in American-English. Orbital period, a concept in astronomy Period (gene), a gene in Drosophila involved in regulating ... |
Period - Wikipedia, the free encyclopediaPuberty and Periods. Menstruation (a period) is a major stage of puberty in girls; it's one of the many physical signs that a girl is turning into a woman. |
All About Menstruation - KidsHealth - the Web's most visited site ...noun 1. a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness ... |
Period | Define Period at Dictionary.compe·ri·od (pîr-d) n. 1. An interval of time characterized by the occurrence of a certain condition, event, or phenomenon: a period of economic prosperity. |
period - definition of period by the Free Online Dictionary ...Her period starts and she doesn't have a sanitary towel or tampon? Having a period start unexpectedly is something that lots of girls worry about happening. |