Definition of "ephemerides" [ephemerides]

• Plural form of ephemeris. (noun)
• An ephemeris. (noun)

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• "And, although the ephemerides of the inner planets are very well known, most likely due to accurate radar measurements in part, this is the first time that such precision is possible for an outer planet."
• "I suspect the ancient Greeks set it up this way because it made astrology amenable to mathematical analysis and easier to construct ephemerides."
• "We have him to thank for ephemerides, those great tables of computed places of celestial bodies over long periods of time."