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The definition of 'tdt' & the word 'tdt' in example sentences or phrases

Noun
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 motions

Synonyms of the word 'tdt' & Antonyms of the word 'tdt'.

Noun
Synonymsephemeris time, terrestrial dynamical time, terrestrial time, TT,