Dip of the horizon
Horizon Ho*ri"zon, n. [F., fr. L. horizon, fr. Gr. ? (sc. ?) the bounding line, horizon, fr. ? to bound, fr. ? boundary, limit.] 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. [1913 Webster]

All the horizon round Invested with bright rays. --Milton. [1913 Webster]

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 visible. [1913 Webster]

3. (Geol.) The epoch or time during which a deposit was made. [1913 Webster]

The strata all over the earth, which were formed at the same time, are said to belong to the same geological horizon. --Le Conte. [1913 Webster]

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. [PJC]

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. [PJC]

{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 body.

{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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Dip of the horizon — 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. [1913 Webster] 3. a hollow or depression in a …   The Collaborative International Dictionary of English

  • Dip of the needle — 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. [1913 Webster] 3. a hollow or depression in a …   The Collaborative International Dictionary of English

  • Dip of a stratum — 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. [1913 Webster] 3. a hollow or depression in a …   The Collaborative International Dictionary of English

  • Depression of the visible horizon — Depression De*pres sion, n. [L. depressio: cf. F. d[ e]pression.] 1. The act of depressing. [1913 Webster] 2. The state of being depressed; a sinking. [1913 Webster] 3. A falling in of the surface; a sinking below its true place; a cavity or… …   The Collaborative International Dictionary of English

  • Depression of the dewpoint — Depression De*pres sion, n. [L. depressio: cf. F. d[ e]pression.] 1. The act of depressing. [1913 Webster] 2. The state of being depressed; a sinking. [1913 Webster] 3. A falling in of the surface; a sinking below its true place; a cavity or… …   The Collaborative International Dictionary of English

  • Depression of the pole — Depression De*pres sion, n. [L. depressio: cf. F. d[ e]pression.] 1. The act of depressing. [1913 Webster] 2. The state of being depressed; a sinking. [1913 Webster] 3. A falling in of the surface; a sinking below its true place; a cavity or… …   The Collaborative International Dictionary of English

  • Ship of the line — Line Line, n. [OE. line, AS. l[=i]ne cable, hawser, prob. from L. linea a linen thread, string, line, fr. linum flax, thread, linen, cable; but the English word was influenced by F. ligne line, from the same L. word linea. See {Linen}.] 1. A… …   The Collaborative International Dictionary of English

  • 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. [1913 Webster] 3. a hollow or depression in a… …   The Collaborative International Dictionary of English

  • Horizon — Ho*ri zon, n. [F., fr. L. horizon, fr. Gr. ? (sc. ?) the bounding line, horizon, fr. ? to bound, fr. ? boundary, limit.] 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 Collaborative International Dictionary of English

  • Horizon — For other uses, see Horizon (disambiguation). A water horizon, in northern Wisconsin, U.S. The horizon (or skyline) is the apparent line that separates earth from sky, the line that divides all visible directions into two categories: those that… …   Wikipedia

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