Found 1 items, similar to Menstrual epact.
English → English (gcide)
Definition: Menstrual epact
Epact
\E"pact\ ([=e]"p[a^]kt), n. [F. ['e]pacte, fr. Gr.
'epakto`s brought on or in, added, fr. 'epa`gein to bring on
or in; 'epi` on, in + 'a`gein to bring or lead. See
Epi-,
and
Act.] (Chron.)
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.
[1913 Webster]
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.
[1913 Webster]