M / mīlĭārensis
adjective

mīlĭārensis

neut. mīlĭārense
(), , mille
that contains a thousand; containing a thousand columns; containing a thousand paces
that contains a thousand (post-class.): porticus, either containing a thousand columns, or containing a thousand paces, Vop. Aur. 49: COHORS, Inscr. Marin. Frat. Arv. p. 630.