epact

[ ee-pakt ]

noun
  1. the difference in days between a solar year and a lunar year.

  2. the number of days since the new moon at the beginning of the calendar year, January 1.

Origin of epact

1
1545–55; <Late Latin epacta<Greek epaktḗ, noun use of feminine of epaktós added, equivalent to ep-ep- + ag(ein) to lead + -tos verbid suffix

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How to use epact in a sentence

British Dictionary definitions for epact

epact

/ (ˈiːpækt) /


noun
  1. the difference in time, about 11 days, between the solar year and the lunar year

  2. the number of days between the beginning of the calendar year and the new moon immediately preceding this

  1. the difference in time between the calendar month and the synodic month

Origin of epact

1
C16: via Late Latin from Greek epaktē, from epagein to bring in, intercalate, from agein to lead

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