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ephebe
ephedra
ephedrine
ephemera (1)
ephemera (2)
ephemeral
ephemerid
ephemeris
ephemeris time
ephemeron
Ephes.
Ephesians
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ephod
ephor
Ephraimite
Ephthalite
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ephemeris time
e·phem·er·is time


noun 
Definition:
 
accurate system of time measurement: a system of time measurement based on the Earth's orbit around the Sun and therefore independent of the irregularities of the Earth's rotation
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