terrestrial dynamical time

Noun

1.

terrestrial dynamical time - (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: ephemeris time, TDT, terrestrial time, TT

astronomy, ephemeris time, TDT, terrestrial time, time unit, TT, unit of time, uranology