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epact

(ē′pakt′)

noun

the period of about eleven days by which the solar year exceeds the lunar year of twelve months
the age, in days, of the calendar moon on the first of the year

Origin: Fr épacte < LL epactae < Gr epaktai (hemerai), intercalary (days) < epagein, to bring in, intercalate < epi-, on, in + agein, to bring, lead: see act

See epact in American Heritage Dictionary 4

noun

The period of time necessary to bring the solar calendar into harmony with the lunar calendar.

Origin:

Origin: French épacte

Origin: , from Late Latin epacta

Origin: , from Greek epaktē (hēmera), intercalary (day)

Origin: , feminine of epaktos, brought in, inserted

Origin: , from epagein, to bring in, introduce

Origin: : ep-, epi-, epi-

Origin: + agein, to lead; see ag- in Indo-European roots

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