calendarium

/ˌkælənˈdɛəɹi.əm/

Etymology

From Latin calendārium. Doublet of calendar.

noun

A calendar or timeline or events.“Phœnician names occur in Suidas, Dioscorides, Apuleius, in martyrologies, calendariums, Acts of Councils, in Church Fathers (Augustine, Priscianus, Servus), &c.”