Late 18th century (in an earlier sense). From post-classical Latin quinion-, quinio group of five (early 3rd cent. in Tertullian) from classical Latin quīnī five each + -ō.
Definition of quinion in US English:
quinion
nounˈkwɪnɪən
Bookbinding. = quinternion.
Origin
Late 18th century (in an earlier sense). From post-classical Latin quinion-, quinio group of five (early 3rd cent. in Tertullian) from classical Latin quīnī five each + -ō.