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English word
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WORDNET DICTIONARY
OXFORD DICTIONARY
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WORDNET DICTIONARY
Noun greenwich mean time has 1 sense
- greenwich mean time(n = noun.time) gmt, greenwich time, universal time, ut, ut1 - the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere; is a kind of time
has particulars: coordinated universal time, utc
OXFORD DICTIONARY
greenwich mean time, n. (also Greenwich Time) the local time on the meridian of Greenwich, used as an international basis of time-reckoning.
Etymology
Greenwich in London, former site of the Royal Observatory