English Dictionary

EPHEMERIS TIME

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 Dictionary entry overview: What does ephemeris time mean? 

EPHEMERIS TIME (noun)
  The noun EPHEMERIS TIME has 1 sense:

1. (astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motionsplay

  Familiarity information: EPHEMERIS TIME used as a noun is very rare.


 Dictionary entry details 


EPHEMERIS TIME (noun)


Sense 1

Meaning:

(astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motions

Classified under:

Nouns denoting time and temporal relations

Synonyms:

ephemeris time; TDT; terrestrial dynamical time; terrestrial time; TT

Hypernyms ("ephemeris time" is a kind of...):

time unit; unit of time (a unit for measuring time periods)

Domain category:

astronomy; uranology (the branch of physics that studies celestial bodies and the universe as a whole)


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