A "posthumous child" refers to a child born after the death of their biological parent. While the term may be a specific legal definition, there are other phrases that can be used to describe this unique circumstance. A common term is "posthumous birth." Other synonyms can include "post-mortem child," "after-death child," or even "late-born child." In some cultures, a posthumous child may also be referred to as a "miracle baby." Regardless of the terminology used, the birth of a posthumous child can be a bittersweet event, as it often means the child will never know their biological parent.