in ordinary, in regular service: a physician in ordinary to the king.
19.
out of the ordinary,
a.
exceptional; unusual: Having triplets is certainly out of the ordinary.
b.
exceptionally good; unusually good: The food at this restaurant is truly out of the ordinary.
Origin: 1250–1300; Middle English ordinarie (noun and adj.) < Latin ordinārius regular, of the usual order, equivalent to ordin- (see order) + -ārius-ary
c.1460, "belonging to the usual order or course," from O.Fr. ordinarie, from L. ordinarius "customary, regular, usual, orderly," from ordo (gen. ordinis) "order" (see order). Various noun usages, dating to c.1380 and common until 19c., now largely extinct except in out of
the ordinary (1893). In British education, Ordinary level "lowest of the three levels of General Certificate of Education" is attested from 1947 (abbrev. O level). Related: Ordinarily.