'Depression of the visible horizon' definitions:

Definition of 'Depression of the visible horizon'

From: GCIDE

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 hollow; as, roughness consists in little protuberances and depressions. [1913 Webster]
4. Humiliation; abasement, as of pride. [1913 Webster]
5. Dejection; despondency; lowness. [1913 Webster]
In a great depression of spirit. --Baker. [1913 Webster]
6. Diminution, as of trade, etc.; inactivity; dullness. [1913 Webster]
7. (Astron.) The angular distance of a celestial object below the horizon. [1913 Webster]
8. (Math.) The operation of reducing to a lower degree; -- said of equations. [1913 Webster]
9. (Surg.) A method of operating for cataract; couching. See Couch, v. t., 8. [1913 Webster]
Angle of depression (Geod.), one which a descending line makes with a horizontal plane.
Depression of the dewpoint (Meteor.), the number of degrees that the dew-point is lower than the actual temperature of the atmosphere.
Depression of the pole, its apparent sinking, as the spectator goes toward the equator.
Depression of the visible horizon. (Astron.) Same as {Dip of the horizon}, under Dip.
Syn: Abasement; reduction; sinking; fall; humiliation; dejection; melancholy. [1913 Webster]