date of reference - definition of date of reference - synonyms, pronunciation, spelling from Free Dictionary

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Wordnet 3.0

NOUN (1)

1. (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded;
[syn: epoch, date of reference]


WordNet (r) 3.0 (2006):

date of reference
    n 1: (astronomy) an arbitrarily fixed date that is the point in
         time relative to which information (as coordinates of a
         celestial body) is recorded [syn: epoch, date of
         reference]