| a system of measuring time based on atomic clocks that measure the second as defined as the SI unit of time. Abbreviation: IAT |
| Main Entry: | International Atomic Time |
| Part of Speech: | n |
| Definition: | See atomic time |
International Atomic Time time, standard
(TAI) An international standard measurement of time based on the comparison of many atomic clocks. TAI is maintained by the Bureau International des Poids et Mesures (BIPM), the world's governing body for civil atomic time measurement. TAI is the basis for Coordinated Universal Time.
BIPM.
(2001-08-02)