A more thorough explanation:

DOMINICUM ANTIQUUM

dominicum antiquum (də-min-ə-kəm an-ti-kwəm), n. [Law Latin] - An ancient domain.

Dominicum antiquum is a legal term that refers to an old or ancient domain. It is a Latin term that is used in legal documents and refers to land or property that has been in existence for a long time. This term is often used in historical contexts to describe land that has been owned by a family or organization for generations.

One example of dominicum antiquum is the land owned by the British royal family. The royal family has owned vast amounts of land for centuries, and much of it is considered ancient domain. Another example is the land owned by the Catholic Church, which has been in possession of many properties for hundreds of years.

These examples illustrate how dominicum antiquum is used to describe land that has been owned for a long time. The term is often used in legal documents to establish ownership and to describe the history of a particular piece of land or property.