magmentārĭus — Lewis & Short
magmentārĭus, a, um, adj.magmentum,
I of or belonging to an addition made to a sacrifice (ante-class.): magmentum a magis, quod ad religionem magis pertinet;
itaque propter hoc magmentaria fana instituta locis certis, quo id imponeretur,Varr. L. L. 5, § 112 Müll.—Hence, subst.: magmentārĭum, i, n. (sc. sacellum), a sanctuary for additional sacrifices:
putant enim ad me non nulli pertinere magmentarium Telluris aperire,Cic. Har. Resp. 14, 31: magmentarium e)f' ou(= ta\ spla/gxna a)natiqe/mena toi=s bwmoi=s prosfe/rontai, Gloss. Philox.