blood relation

or blood relative

noun

1. one related by birth.

blood relation

noun

1. a person related to another by birth, as distinct from one related by marriage

Word History and Origins

Origin of blood relation¹

First recorded in 1700–10

Example Sentences

Creon chose to designate his nephew’s body as that of a traitor, ignoring their blood relation, thereby sealing his fate and that of his entire family.

From Salon

They were not blood relations, but the name, which means “plum” in Chinese, as well as their origins in China’s Guangdong, or Canton, province, bound them like siblings.

From Los Angeles Times

No one had ever staged a full-scale show of David’s works on paper, and this one offered an unusual vista of an artist whose grand paintings put reason before passion, and ideals before blood relations.

From New York Times

“The thing is, it’s a blood relation,” she said in a video that Mr. Dhillon uploaded in May.

From New York Times

Yet somehow these men — the actual blood relations — aren’t expected to pitch in at all.

From New York Times