M / millēnārĭus
adjective

millēnārĭus

fem. millēnāria · neut. millēnārium
containing a thousand, millenary
containing a thousand, millenary (postclass.): numerus, Aug. Civ. Dei, 20, 7: aevum, Tert. de Anim. 32: dux lanceariorum, commander of a thousand, Cassiod. Hist. Eccl. 6, 35.