Primacy is the state of coming first in rank or importance. The primacy of the law.
It is about precedence rather than power, though the two usually travel together. Primacy in the church names the office of a primate, which is where the word began.
1nounprimacyThe state of coming first in rank or importance.
“The primacy of the written contract settled the dispute.”
primacy is a state.
Medieval Latin primatia, the office of a church primate, from Latin primus, first.
Latin
primas
Medieval Latin
primatia — office of a church primate
Old French
primacie
English, today
primacy
From Old French primacie, from Medieval Latin primatia (“office of a church primate”), from Latin primas plus a suffix corresponding to -acy. by surface analysis, en + prime + acy.
Etymology from Wiktionary, CC BY-SA