单词 | ephemeris |
释义 | ephemeris/ɪˈfɛm(ə)rɪs / /ɪˈfiːm(ə)rɪs/noun (plural ephemerides /ˌɛfɪˈmɛrɪdiːz/) Astronomy & Astrology A table or data file giving the calculated positions of a celestial object at regular intervals throughout a period: you can compute an ephemeris for any comet that is discovered and plot an accurate finder chart...
OriginEarly 16th century: from Latin, from Greek ephēmeros 'lasting only a day'. |
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