Plural of ephemeris
irregular plural
The plural of ephemeris is ephemerides or ephemerises.
Forms of ephemeris
| Singular | ephemeris /ɪˈfɛməɹɪs/ |
|---|---|
| Plural | ephemerides /ˌɛfɪˈmɛɹɪdiːz/ ephemerises |
| Countable | countable |
Ephemerides and ephemerises in a sentence
- Stellar occultations potentially provide the highest precision data for relating solar system ephemerides to the stellar reference frame.1994, C. B. Olkin, J[ames] L[udlow] Elliot, “Occultation Astrometry: Predictions and Post-event Results”, in L. V. Morrison, G. F.…. From the entry occultation
Meaning of ephemeris
- noun A journal or diary.
- noun A table giving the apparent position of celestial bodies throughout the year; normally given as right ascension and declination.
- noun Computer software that calculates the apparent position of celestial bodies.
Other irregular plurals
Questions about the plural of ephemeris
- What is the plural of ephemeris?
- The plural of ephemeris is ephemerides or ephemerises.
- Which is correct, ephemerides or ephemerises?
- Both are used. ephemerides is the more common of the two in English writing.
- Is ephemeris countable?
- Ephemeris is a countable noun.
Source and license
Adapted from Wiktionary: ephemeris (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.
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Cite this page: “Plural of ephemeris.” Word.ws, https://word.ws/plural/ephemeris. Based on Wiktionary, CC BY-SA 4.0.