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Meaning of transit

tran•sit

Pronunciation: (tran'sit, -zit), [key]
— n., v., -sit•ed, -sit•ing.
—n.
  1. the act or fact of passing across or through; passage from one place to another.
  2. conveyance or transportation from one place to another, as of persons or goods, esp., local public transportation:Cf. city transit.
  3. a transition or change.
    1. the passage of a heavenly body across the meridian of a given location or through the field of a telescope.
    2. the passage of Mercury or Venus across the disk of the sun, or of a satellite or its shadow across the face of its primary.
    3. Seemeridian circle.
  4. the passage of a planet in aspect to another planet or a specific point in a horoscope.
    1. Also calledtransit instrument.an instrument, as a theodolite, having a telescope that can be transited, used for measuring horizontal and sometimes vertical angles.
    2. a repeating transit theodolite.
  5. (cap.) one of a series of satellites for providing positional data to ships and aircraft.
—v.t.
  1. to pass across or through.
  2. to turn (the telescope of a transit) in a vertical plane in order to reverse direction; plunge.
  3. to cross (a meridian, celestial body, etc.).
—v.i.
  1. to pass over or through something; make a transit.
  2. to make a transit across a meridian, celestial body, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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