(also blood relative)
Definition of blood relation in English:
A person who is related to another by birth rather than by marriage.
- Which do you think is the blood relative and which the relation because of marriage?
- Christopher isn't a blood relative of Tony's, but rather an in-law.
- Even though he is not your blood relative, since your parents are married, you two are family and will always be in each other's lives.
Definition of blood relation in:
- US English dictionary