Ealendarium
Defined in 2 dictionaries — Kinney (1893), Black's (1891)
A Law Dictionary and Glossary
George C. Kinney · 1893
I.
In the civil law. A calendar, a book of accounts; a book of accounts of money loaned out on interest, — so called because the interest was received on the calends of each month.
A Dictionary of Law
Henry Campbell Black · 1891
Inthecivyillaw. A ealendar; a book of accounts, memorandumbook, or debt-book; a book in which accounts were kept of moneys loaned out on interest. Dig. 32, 64, So called because the Romans used to let out their money and receive the interest on the calends of each month. Calyin.