ephemeris
Americannoun
-
a table showing the positions of a heavenly body on a number of dates in a regular sequence.
-
an astronomical almanac containing such tables.
-
Archaic. an almanac or calendar.
noun
-
a table giving the future positions of a planet, comet, or satellite
-
an annual publication giving the positions of the sun, moon, and planets during the course of a year, information concerning eclipses, astronomical constants, etc
-
obsolete a diary or almanac
Other Word Forms
Noun Inflected Forms
Etymology
Origin of ephemeris
1545–55; < Latin ephēmeris day book, diary < Greek ephēmerís diary, account book, derivative of ephḗmeros; see ephemeral
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
This is the offset to apply to Chariklo’s ephemeris to fit the observations.
From Nature ● Apr. 4, 2014
From the resulting elements of the orbit the positions of the body from day to day may be computed and tabulated in an ephemeris for the use of observers.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" by Various
The astronomical ephemeris is the last outcome of their productive genius.”
From Astronomical Curiosities Facts and Fallacies by Gore, J. Ellard
In explaining it, I will take the ephemeris as it now is, with the small changes which have been made from time to time.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Newcomb, Simon
To do this successfully, and without waste of time, it is necessary to have an astronomical ephemeris for the year.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Newcomb, Simon
In the present day, the nautical ephemerides contain, several years in advance, the indication of the times of the eclipses and reappearances of Jupiter's satellites.
From Biographies of Distinguished Scientific Men by Grant, Robert
He published a series of ephemerides, beginning in 1659.
From A Budget of Paradoxes, Volume I by Smith, David Eugene
Now, I gather from Professor Adams' remarks that upon this question the ephemerides which we now employ have some important bearing.
These ephemerides of politics are not made for our slow and coarse understandings.
From The Works of the Right Honourable Edmund Burke, Vol. 06 (of 12) by Burke, Edmund
The pictorial journalism of the "Comic Almanacks" is often delicious; no ephemerides, in my knowledge, equal them in sustained humorous effect.
From George Cruikshank by Chesson, W. H.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
