ALL meanings of greenwich mean time
Green·wich mean time
G g - noun greenwich mean time the time as measured on the prime meridian running through Greenwich, England: used in England and as a standard of calculation elsewhere. 1
- noun Definition of greenwich mean time in Technology (time, standard) (GMT) The local time on the Greenwich meridian, based on the hypothetical mean sun (which averages out the effects of the Earth's elliptical orbit and its tilted axis). GMT is the basis of the civil time for the UK. In 1925 the reference point was changed from noon to midnight and it was recommended that the term "Universal Time" should be used for the new GMT. Authorities disagreed on whether GMT equates with UT0 or UT1, however the differences between the two are of the order of thousandths of a second. GMT is no longer used for scientific purposes. 1
- noun greenwich mean time GMT: universal time 1
- adverb greenwich mean time universal time 1
- noun greenwich mean time mean solar time on the 0° meridian passing through Greenwich, England, measured from midnight: formerly a standard time in Britain and a basis for calculating times throughout most of the world, it has been replaced by an atomic timescale 0
- noun greenwich mean time mean solar time of the meridian (0° longitude) at Greenwich, England 0