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Webster 1913 Edition

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(mē̍-nā′yŏn)

Noun.

;

pl.

Menaia

(-yȧ)

[NL., from Gr.

μηναῖοσ

monthly.]

(Eccl.)

A work of twelve volumes, each containing the offices in the Greek Church for a month; also, each volume of the same.

Shipley.

menaion ‎(plural menaia)

The annual fixed liturgical cycle of services used in the Eastern Orthodox and Greek-Catholic Churches, containing a list of the services and large collection of liturgical texts for an entire month. Twelve volumes are usually offered for the year, as a set known as the menaia.

General Menaion - a book which contains services for each type of celebration (apostles, martyrs, etc.) with blank spaces for the name of the saint being celebrated.
Festal Menaion - an anthology which contains the texts for those Great Feasts of the Lord or the Theotokos which fall on the fixed cycle, and optionally feasts of the major saints.

liturgical cycle