[mod.L., f. L. lūnāris LUNAR.] An instrument representing the phases and motions of the moon. Cf. LUNARY sb.2
1786. T. Jefferson, Writ. (1859), I. 507. What is become of the Lunarium for the King?
1794. G. Adams, Nat. & Exp. Philos., IV. xliii. App. 171.
