Share this entry

Share this page

ephemeris time

Line breaks: ephem|eris time

Definition of ephemeris time in English:

noun

Time on a scale defined by the orbital period rather than the axial rotation of the earth.
Example sentences
  • When ephemeris time does become relevant is when our questions are on general indications over long periods of time, or when we wish to look beyond the immediate limits imposed by the question to see what may happen over a longer period.
  • Leap seconds are inserted only for human convenience, and eclipse phenomena are computed using astronomers' dynamical or ephemeris time systems.

Definition of ephemeris time in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day terpsichorean
Pronunciation: ˌtəːpsɪkəˈriːən
adjective
relating to dancing