epact
epact is defined in Webster's Unabridged Dictionary (1913) with 1 sense. The full text of each entry is reproduced verbatim below.
Definitions
- 1.The moon's age at the beginning of the calendar year, or the number of days by which the last new moon has preceded the beginning of the year. Annual epact, the excess of the solar year over the lunar year, -- being eleven days. -- Menstrual epact, or Monthly epact, the excess of a calendar month over a lunar.
Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Definitions: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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