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2 definitions found
 for Dip of the horizon
From The Collaborative International Dictionary of English v.0.48 :

  Horizon \Ho*ri"zon\, n. [F., fr. L. horizon, fr. Gr. ? (sc. ?)
     the bounding line, horizon, fr. ? to bound, fr. ? boundary,
     1. The line which bounds that part of the earth's surface
        visible to a spectator from a given point; the apparent
        junction of the earth and sky.
        [1913 Webster]
              And when the morning sun shall raise his car
              Above the border of this horizon.     --Shak.
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              All the horizon round
              Invested with bright rays.            --Milton.
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     2. (Astron.)
        (a) A plane passing through the eye of the spectator and
            at right angles to the vertical at a given place; a
            plane tangent to the earth's surface at that place;
            called distinctively the sensible horizon.
        (b) A plane parallel to the sensible horizon of a place,
            and passing through the earth's center; -- called also
            rational horizon or celestial horizon.
        (c) (Naut.) The unbroken line separating sky and water, as
            seen by an eye at a given elevation, no land being
            [1913 Webster]
     3. (Geol.) The epoch or time during which a deposit was made.
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              The strata all over the earth, which were formed at
              the same time, are said to belong to the same
              geological horizon.                   --Le Conte.
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     4. (Painting) The chief horizontal line in a picture of any
        sort, which determines in the picture the height of the
        eye of the spectator; in an extended landscape, the
        representation of the natural horizon corresponds with
        this line.
        [1913 Webster]
     5. The limit of a person's range of perception, capabilities,
        or experience; as, children raised in the inner city have
        limited horizons.
     6. [fig.] A boundary point or line, or a time point, beyond
        which new knowledge or experiences may be found; as, more
        powerful computers are just over the horizon.
     Apparent horizon. See under Apparent.
     Artificial horizon, a level mirror, as the surface of
        mercury in a shallow vessel, or a plane reflector adjusted
        to the true level artificially; -- used chiefly with the
        sextant for observing the double altitude of a celestial
     Celestial horizon. (Astron.) See def. 2, above.
     Dip of the horizon (Astron.), the vertical angle between
        the sensible horizon and a line to the visible horizon,
        the latter always being below the former.
     Rational horizon, and Sensible horizon. (Astron.) See
        def. 2, above.
     Visible horizon. See definitions 1 and 2, above.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Dip \Dip\, n.
     1. The action of dipping or plunging for a moment into a
        liquid. "The dip of oars in unison." --Glover.
        [1913 Webster]
     2. Inclination downward; direction below a horizontal line;
        slope; pitch.
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     3. a hollow or depression in a surface, especially in the
     4. A liquid, as a sauce or gravy, served at table with a
        ladle or spoon. [Local, U.S.] --Bartlett.
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     5. A dipped candle. [Colloq.] --Marryat.
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     6. A gymnastic exercise on the parallel bars in which the
        performer, resting on his hands, lets his arms bend and
        his body sink until his chin is level with the bars, and
        then raises himself by straightening his arms.
        [Webster 1913 Suppl.]
     7. In the turpentine industry, the viscid exudation, which is
        dipped out from incisions in the trees; as, virgin dip
        (the runnings of the first year), yellow dip (the runnings
        of subsequent years).
        [Webster 1913 Suppl.]
     8. (A["e]ronautics) A sudden drop followed by a climb,
        usually to avoid obstacles or as the result of getting
        into an airhole.
        [Webster 1913 Suppl.]
     9. a liquid, in which objects are soaked by dipping; e.g., a
        parasiticide or insecticide solution into which animals
        are dipped (see sheep-dip).
     10. a sauce into which foods are dipped to enhance the
         flavor; e. g., an onion dip made from sour cream and
         dried onions, into which potato chips are dipped.
     11. a pickpocket. [slang]
     Dip of the horizon (Astron.), the angular depression of the
        seen or visible horizon below the true or natural horizon;
        the angle at the eye of an observer between a horizontal
        line and a tangent drawn from the eye to the surface of
        the ocean.
     Dip of the needle, or Magnetic dip, the angle formed, in
        a vertical plane, by a freely suspended magnetic needle,
        or the line of magnetic force, with a horizontal line; --
        called also inclination.
     Dip of a stratum (Geol.), its greatest angle of inclination
        to the horizon, or that of a line perpendicular to its
        direction or strike; -- called also the pitch.
        [1913 Webster]

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