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A modern dictionary of 5,679 Catholic terms (including abbreviations), both common and obscure. Find accurate definitions of words and phrases. All items in this dictionary are from Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.

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Term

HEORTOLOGY

Definition

The study of religious calendars. More specifically, the science of the history and meaning of the seasons and festivals of the Christian Church year. (Etym. Greek heorte, feast + logia, science, knowledge.)