Definition of Epact
E´pact
Pronunciation:
ē´păkt
n.
1.
(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
.
Annual epact
the
excess
of
the
solar
year
over
the
lunar
year
, -
being
eleven
days
.
Menstrual epact
the
excess
of
a
calendar
month
over
a
lunar
.
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Eocene
eohippus
Eolian
Eolian attachment
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