(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 dynamical time, terrestrial time,
tt
noun()
a country scattered over Micronesia with a constitutional government in free association with the United States; achieved independence in 1986
Synonyms: federated states of micronesia, micronesia,