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epenthesis
epergne
epexegesis
Eph.
ephah
ephebe
ephedra
ephedrine
ephemera (1)
ephemera (2)
ephemeral
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epact

e·pact [  pàkt ]


noun 
Definition:
 
difference between lunar and solar years: a period of about 11 days that represents the difference between the lunar year and the solar year

[Mid-16th century. Via French< late Latin epacta< Greek epaktē (hēmera) "added (day)" < agein "to lead"]
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