tdt n (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 Synonym(s) terrestrial time TT terrestrial dynamical time TDT ephemeris time
News & Articles tdt Research and Markets: TDT-067 (Dermatophytic Onychomycosis) - Forecast and Market Analysis to 2022 Research and Markets has announced the addition of the "TDT-067 - Forecast and Market Analy July 25, 2013 - Business Wire via Yahoo! Finance