calendarian,a.andn.rare.|kælənˈdɛərɪən| [f. as prec. + -an.] A.adj. Of or pertaining to a calendar. 1839Blackw. Mag. XLV. 372 The conventional calendarian principles of the poem.Ibid. 380 Calendarian festivals. B.n. A maker of a calendar. 1826Hone E.D. Bk. I. 1378 A contemporary kalendarian.