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greenwich mean time

Green·wich mean time
G g

Transcription

    • US Pronunciation
    • US IPA
    • UK Pronunciation
    • UK IPA
    • [grin-ij, -ich, gren- for 1, 3 meen tahym]
    • /ˈgrɪn ɪdʒ, -ɪtʃ, ˈgrɛn- for 1, 3 min taɪm/
    • /ˈgrenɪʧ miːn taɪm/
    • US Pronunciation
    • US IPA
    • [grin-ij, -ich, gren- for 1, 3 meen tahym]
    • /ˈgrɪn ɪdʒ, -ɪtʃ, ˈgrɛn- for 1, 3 min taɪm/

Definitions of greenwich mean time words

  • 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midnight: formerly a standard time in Britain and a basis for calculating times throughout most of the world, it has been replaced by an atomic timescale 0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
See all 6 definitions of greenwich mean time

Information block about the term

Origin of greenwich mean time

First appearance:

before 1840
One of the 33% newest English words
First recorded in 1840-50

Historical Comparancy

Parts of speech for Greenwich mean time

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
Full grammatical hierarchy of Greenwich mean time

greenwich mean time popularity

This term is known only to a narrow circle of people with rare knowledge. Only 29% of English native speakers know the meaning of this word.
According to our data about 64% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

Synonyms for greenwich mean time

noun greenwich mean time

  • international atomic time — a system of measuring time based on atomic clocks that measure the second as the basic unit of time in the International System of Units (SI). Abbreviation: IAT.
  • utc — (time, standard)   (UTC, World Time) The standard time common to every place in the world. UTC is derived from International Atomic Time (TAI) by the addition of a whole number of "leap seconds" to synchronise it with Universal Time 1 (UT1), thus allowing for the eccentricity of the Earth's orbit, the rotational axis tilt (23.5 degrees), but still showing the Earth's irregular rotation, on which UT1 is based. Coordinated Universal Time is expressed using a 24-hour clock and uses the Gregorian calendar. It is used in aeroplane and ship navigation, where it also sometimes known by the military name, "Zulu time". "Zulu" in the phonetic alphabet stands for "Z" which stands for longitude zero. UTC was defined by the International Radio Consultative Committee (CCIR), a predecessor of the ITU-T. CCIR Recommendation 460-4, or ITU-T Recommendation X.680 (7/94), contains the full definition. The language-independent international abbreviation, UTC, is neither English nor French. It means both "Coordinated Universal Time" and "Temps Universel Coordonné".
  • universal time coordinated — incorrect term for coordinated universal time.
All 3 Synonyms of greenwich mean time

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