numerary
/ˈnjuːmər(ər)i/adjective
Of or relating to a number or numbers. Now rare.
noun
Roman Catholic Church. A member of the highest of the three lay ranks of the Opus Dei prelature; (with the) these members collectively (treated as plural).
Origin
Early 18th century (in an earlier sense). From post-classical Latin numerarius, adjective, earlier as noun, denoting an arithmetician, accountant, book-keeper from classical Latin numerus + -ārius.