Definition of Tdt in English :

Define Tdt in English

Tdt meaning in English

Meaning of Tdt in English

Pronunciation of Tdt in English

Tdt pronunciation in English

Pronounce Tdt in English


see synonyms of tdt


1. ephemeris time, tdt, terrestrial dynamical time, terrestrial time, tt

(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

WordNet Lexical Database for English. Princeton University. 2010.