/ˈlɪniəl rɪˈleɪʃənʃɪp/ – Phrase
Definition: quan hệ họ hàng theo trực hệ.
A more throughout explanation: A lineal relationship refers to a direct relationship between individuals who are related by blood, such as parents and children, grandparents and grandchildren, or siblings. This term is often used in legal contexts to describe the direct and immediate familial connections within a family tree.
Example: In the will, the testator specified that the inheritance should pass to his lineal descendants in a direct lineal relationship.