A mother is the female parent of a child. Mothers are women who inhabit or perform the role of bearing some relation to their children, who may or may not be their biological offspring. Thus, dependent on the context, women can be considered mothers by virtue of having given birth, by raising their child(ren), supplying their ovum for fertilisation, or some combination thereof. Such conditions provide a way of delineating the concept of motherhood, or the state of being a mother. Women who meet the third and first categories usually fall under the terms 'birth mother' or 'biological mother', regardless of whether the individual in question goes on to parent their child. Accordingly, a woman who meets only the second condition may be considered an adoptive mother, and those who meet only the first or only the third a surrogacy mother.
An adoptive mother is a female who has become the child's parent through the legal process of adoption. A biological mother is the female genetic contributor to the creation of the infant, through sexual intercourse or egg donation. A biological mother may have legal obligations to a child not raised by her, such as an obligation of monetary support. A putative mother is a female whose biological relationship to a child is alleged but has not been established. A stepmother is a female who is married to a child's father and they may form a family unit, but who generally does not have the legal rights and responsibilities of a parent in relation to the child.
The above concepts defining the role of mother are neither exhaustive nor universal, as any definition of 'mother' may vary based on how social, cultural, and religious roles are defined. There are parallel conditions and terms for males: those who are (typically biologically) fathers do not, by definition, take up the role of motherhood. Motherhood and fatherhood are not limited to those who are or have parented. Women who are pregnant may be referred to as expectant mothers or mothers-to-be, though such applications tend to be less readily applied to (biological) fathers or adoptive parents. The process of becoming a mother has been referred to as "matrescence".The adjective "maternal" refers to a mother and comparatively to "paternal" for a father. The verb "to mother" means to procreate or to sire a child from which also derives the noun "mothering". Related terms of endearment are mom (mama, mommy), mum (mummy), mumsy, mamacita (ma, mam) and mammy. A female role model that children can look up to is sometimes referred to as a mother-figure.