Overview
A stepfamily is a family where at least one parent has children who are not biologically related to their spouse. Either parent, or both, may have children from previous relationships or marriages. Two known classifications for stepfamilies include "simple" stepfamilies, where only one member of the family's couple has a prior child or children and the couple does not have any children together, and "complex" or "blended" families, where both members of the couple have at least one child from another relationship.
Etymology
The earliest recorded use of the prefix step-, in the form steop-, is from an 8th-century glossary of Latin-Old English words meaning "orphan". is given for the Latin word and for . Similar words recorded later in Old English include , , and . The words are used to denote a connection resulting from the remarriage of a widowed parent and are related to the word meaning 'bereaved', with and occasionally used simply as synonyms for orphan. Words such as stepbrother, stepniece and stepparent appeared much later and have no particular connotation of bereavement. Corresponding words in other Germanic languages include Old High German and Old Norse .
Terminology
A child is referred to as the stepdaughter or stepson of their biological or adoptive parent's new spouse, and the spouse is referred to as the stepparent (father or mother) of the child.
A stepparent is the spouse of someone's parent, and not their biological parent, stepfather being the male spouse and stepmother the female spouse.
A step-grandparent is the step-parent of someone's parent, and not someone's biological grandparent, stepgrandfather being the male one, and stepgrandmother the female one.
A step-uncle is the spouse of someone's parent's sister (aunt) or brother (uncle) and is not the father of someone's cousin, except when the sibling marries another and never has children (no cousins). The sister's niece/nephew should refer to a new spouse as uncle, not step-uncle. A step-aunt is the spouse of someone's parent's brother (uncle) or sister (aunt) and is not the mother of someone's cousin, except when the sibling marries another and never had children (no cousins). The sister's niece/nephew should refer to the newest spouse as aunt, not step-aunt. Similarly, a stepsibling is the offspring of a stepparent to whom one is not biologically or adoptive related, stepbrother being the male one and stepsister the female one.
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