Engelsk navneord: TDT | |||
| 1. | TDT (om tid) (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 | ||
| Termer med samme betydning (synonymer) | ephemeris time, terrestrial dynamical time, terrestrial time, TT | ||
| Mindre specifikke termer | time unit, unit of time | ||
| Overordnet emneområde | astronomy, uranology | ||