A woman is an adult female human being. The term woman (irregular plural: women) usually is used for an adult, with the term girl being the usual term for a female child or adolescent. However, the term woman is also sometimes used to identify a female human, regardless of age, as in phrases such as "Women's rights". In Old English the words wer and wyf (also wæpman and wifman) were what was used to refer to "a man" and "a woman" respectively, and "Man" was gender neutral. In Middle English man displaced wer as term for "male human", whilst wifman (which eventually evolved into woman) was retained for "female human". ("Wif" also evolved into the word "wife".) "Man" does continue to carry its original sense of "Human" however, resulting in an asymmetry sometimes criticized as sexist.[1] (See also Womyn.) The symbol for the planet Venus is the sign also used in biology for the female gender. It is a stylized representation of the goddess Venus's hand mirror or an abstract symbol for the goddess: a circle with a small equilateral cross underneath (Unicode: ♀). The Venus symbol also represented femininity, and in ancient alchemy stood for copper. Alchemists constructed the symbol from a circle (representing spirit) above an equilateral cross (representing matter). Womanhood is the period in a female's life after she has transitioned from girlhood, at least physically, having passed the age of menarche. Many cultures have rites of passage to symbolize a woman's coming of age, such as confirmation in some branches of Christianity, bat mitzvah in Judaism, or even just the custom of a special celebration for a certain birthday (generally between 12 and 21). The word woman can be used generally, to mean any female human, or specifically, to mean an adult female human as contrasted with girl. The word girl originally meant "young person of either sex" in English; it was only around the beginning of the 16th century that it came to mean specifically a female child. Nowadays girl sometimes is used colloquially to refer to a young or unmarried woman. During the early 1970s feminists challenged such use, and use of the word to refer to a fully grown woman may cause offence. In particular previously common terms such as office girl are no longer used. Conversely, in certain cultures which link family honor with female virginity, the word girl is still used to refer to a never-married woman; in this sense it is used in a fashion roughly analogous to the obsolete English maid or maiden. Referring to an unmarried female as a woman may, in such a culture, imply that she is sexually experienced, which would be an insult to her family. In some settings, the use of girl to refer to an adult female is a vestigial practice (such as girls' night out), even among some elderly women. In this sense, girl may be considered to be the analogue to the British word bloke for a man, although it again fails to meet the parallel status as an adult. Gal aside, some feminists cite this lack of an informal yet respectful term for women as misogynistic; they regard non-parallel usages, such as men and girls, as sexist. There are various words used to refer to the quality of being a woman. The term "womanhood" merely means the state of being a woman, having passed the menarche; "femininity" is used to refer to a set of supposedly 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. In terms of biology, the female sex organs are involved in the reproductive system, whereas the secondary sex characteristics are involved in nurturing children or, in some cultures, attracting a mate. The ovaries, in addition to their regulatory function producing hormones, produce female gametes called eggs which, when fertilized by male gametes (sperm), form new genetic individuals. 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 word vagina is often colloquially and incorrectly used for the vulva or external female genitalia, which also includes the labia, the clitoris, and the female urethra). 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. (For other ways in which men commonly differ physically from women, see Man.) An imbalance of maternal hormonal levels and some chemicals (or drugs) may alter the secondary sexual characteristics of fetuses. 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. Unlike the Y chromosome, the X can come from either the mother or the father, thus genetic studies which focus on the female line use mitochondrial DNA. Biological factors are not sufficient determinants of whether a person considers themselves a woman or is considered a woman. Intersexed men and women, who have mixed physical and/or genetic features, may use other criteria in making a clear determination. There are also transgendered or transsexual women, who were born or physically assigned as male at birth, but identify as a woman; there are varying social, legal, and individual definitions with regard to this issue. (See transwoman.) During early fetal development, embryos of both sexes appear gender neutral; the release of hormones is what changes physical appearance male or female. As in other cases without two sexes, such as species that reproduce asexually, the gender-neutral appearance is closer to female than to male. As changes in the labor market for women came about, availability of employment changed from only "dirty", long houred factory jobs to "cleaner", more respectable office jobs where a little more education was demanded, women's participation in the labor force rose from 6% in 1900 to 23% in 1923. These shifts in the labor force led to changes in the attitudes of women at work, allowing for the "quiet" revolution which resulted in women becoming more career and education oriented. This revolution of women in the labor force came about because of changes in three essential criteria:[6] Changes in decision making: Women were making decisions regarding their lives, education, and career goals. Marriage was postponed and more women made time to focus on a career and an education, rather than just going to college to meet a spouse. While women account for more than half of university graduates in several OECD countries, they receive only 30% of tertiary degrees granted in science and engineering fields, and women account for only 25% to 35% of researchers in most OECD countries.[8]
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