stepparent

English Thesaurus

1. the spouse of your parent by a subsequent marriage (noun.person)

hypernym	:	parent,
definition	:	a father or mother; one who begets or one who gives birth to or nurtures and raises a child; a relative who plays the role of guardian (noun.person)

hyponym	:	stepfather,
definition	:	the husband of your mother by a subsequent marriage (noun.person)

hyponym	:	stepmother,
definition	:	the wife of your father by a subsequent marriage (noun.person)