heortology en · NOUN
Etymology
From German Heortologie, from Ancient Greek ἑορτή (heortḗ, “festival”) + -ology.
Meanings
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(uncountable) The study of religious festivals.
For the same reason, in accordance with the meaning of the term "Heortology," he has concerned himself with those festivals alone which are publicly celebrated, or were so celebrated formerly.
1901, A Priest of the Diocese of Westminster, “Preface”, in Rev. J. Wilhelm, D.D., Ph.d., editor, Heortology: a history of the Christian festivals from their origin to the present day, London: Kegan Paul, Trench, Trübner & Co., Limited, translation of Heortologie, oder, das Kirchenjahr und die Heiligenfeste in ihrer geschichtlichen Entwicklung by Karl Adam Heinrich Kellner, published 1908, page vi: