Women with typical genetic development are usually capable of giving birth from puberty until menopause.
With regard to gender, a woman may also be a person whose sex assignment does not align with their gender identity, In Old English, wīfmann meant "female human", whereas wēr meant "male human".
A fetus usually develops into a male if it is exposed to a significant amount of testosterone (typically because the fetus has a Y chromosome from the father).
Otherwise, the fetus usually develops into a female, typically when the fetus has an X chromosome from the father, but also when the father contributed neither an X nor Y chromosome.
The breast evolved from the sweat gland to produce milk, a nutritious secretion that is the most distinctive characteristic of mammals, along with live birth.
In mature women, the breast is generally more prominent than in most other mammals; this prominence, not necessary for milk production, is probably at least partially the result of sexual selection.
Most women have the karyotype 46, XX, but around one in a thousand will be 47, XXX, and one in 2500 will be 45, X.
This contrasts with the typical male karotype of 46, XY; thus, the X and Y chromosomes are known as female and male, respectively.
The word girl originally meant "young person of either sex" in English; The term girl is sometimes used colloquially to refer to a young or unmarried woman; however, during the early 1970s feminists challenged such use because the use of the word to refer to a fully grown woman may cause offence.
The uterus is an organ with tissue to protect and nurture the developing fetus and muscle to expel it when giving birth.
The vagina is used in copulation and birthing, although the term vagina is often colloquially and incorrectly used in the English language for the vulva or external female genitalia, which consists of (in addition to the vagina) the labia, the clitoris, and the female urethra.
The term "womanhood" merely means the state of being a woman, having passed the menarche; "femininity" is used to refer to a set of typical female qualities associated with a certain attitude to gender roles; "womanliness" is like "femininity", but is usually associated with a different view of gender roles; "femaleness" is a general term, but is often used as shorthand for "human femaleness"; "distaff" is an archaic adjective derived from women's conventional role as a spinner, now used only as a deliberate archaism; "muliebrity" is a neologism (derived from the Latin) meant to provide a female counterpart of "virility", but used very loosely, sometimes to mean merely "womanhood", sometimes "femininity" and sometimes even as a collective term for women.
bat mitzvah in Judaism, or even just the custom of a special celebration for a certain birthday (generally between 12 and 21), like the Quinceañera of Latin America.