A more thorough explanation:

Consanguinitas (pronounced kon-sang-gwin-uh-tas) is a Latin term that means "relationship by blood." In Roman law, it specifically refers to the relationship between siblings who have the same father.

For example, if John and Jane have the same father, they have a consanguinitas relationship. This means they are siblings who share a biological father.

This term is important in legal and medical contexts, as it can impact inheritance laws and genetic risks for certain diseases. Understanding consanguinitas relationships can help individuals make informed decisions about their health and family planning.