horizon : Idioms & Phrases

Index

a horizon

  • noun the top layer of a soil profile; usually contains humus
    A horizon.
WordNet

a-horizon

  • noun the top layer of a soil profile; usually contains humus
    A horizon.
WordNet

Apparent horizon

  • noun the line at which the sky and Earth appear to meet
    skyline; sensible horizon; horizon; apparent horizon.
WordNet
  • the circle which in a level plain bounds our view, and is formed by the apparent meeting of the earth and heavens, as distinguished from the rational horizon.
Webster 1913

Artificial horizon

  • noun a navigational instrument based on a gyroscope; it artificially provides a simulated horizon for the pilot
    flight indicator; artificial horizon.
WordNet
  • 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 body.
Webster 1913

Axis of the equator, ecliptic, horizon (or other circle considered with reference to the sphere on which it lies)

  • the diameter of the sphere which is perpendicular to the plane of the circle. Hutton.
Webster 1913

b horizon

  • noun immediately below the A-horizon; contains deposits of organic matter leached from surface soils
    B horizon.
WordNet

b-horizon

  • noun immediately below the A-horizon; contains deposits of organic matter leached from surface soils
    B horizon.
WordNet

c horizon

  • noun beneath the B-horizon and above the bedrock; consisting of weathered rock
    C horizon.
WordNet

c-horizon

  • noun beneath the B-horizon and above the bedrock; consisting of weathered rock
    C horizon.
WordNet

Celestial horizon

  • noun the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth
    horizon.
WordNet
  • . (Astron.) See def. 2, above.
Webster 1913

Depression of the visible horizon

  • . (Astron.) Same as Dip of the horizon, under Dip.
Webster 1913

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.
  • (Astron.), the vertical angle between the sensible horizon and a line to the visible horizon, the latter always being below the former.
Webster 1913

geological horizon

  • noun a layer of rock with a particular composition (especially of fossils); for dating the stratum
WordNet

gyro horizon

  • noun a navigational instrument based on a gyroscope; it artificially provides a simulated horizon for the pilot
    flight indicator; artificial horizon.
WordNet

Quicksilver horizon

  • a mercurial artificial horizon. See under Horizon.
Webster 1913

Rational horizon

  • . (Astron.) See Horizon, 2 (b).
Webster 1913

Rational horizon, and Sensible horizon

  • . (Astron.) See def. 2, above.
Webster 1913

Sensible horizon

  • noun the line at which the sky and Earth appear to meet
    skyline; sensible horizon; horizon; apparent horizon.
WordNet
  • . See Horizon, n., 2. (a).
Webster 1913

soil horizon

  • noun a layer in a soil profile
WordNet

Visible horizon

  • noun the line at which the sky and Earth appear to meet
    skyline; sensible horizon; horizon; apparent horizon.
WordNet
  • . See definitions 1 and 2, above.
  • . Same as Apparent horizon, under Apparent.
Webster 1913