Lewis Short
(adjective) : mĕdĭānus, a, um, medius
* That is in the middle, middle (except Vitr., only post-class.): columnae,Vitr. 3, 2, 6: acroteria,id. 3, 5, 12: capita leonina,id. 3, 5, 15: digitus,Veg. Vet. 2, 40, 3: filius,Hier. Ep. 73, 3: porta,Inscr. Fabr. 463, 95.— Subst.: mĕdĭānum, i, n., the middle part, the middle: ex mediano coenaculi,Dig. 9, 3, 5, § 2.—Plur.: mediana malvarum,Apic. 4, 2, 133.
Charlton T. Lewis, Charles Short, A Latin Dictionary