depression

depression is a Noun

Definition:

[1] The act of depressing.

[2] The state of being depressed; a sinking.

[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.

[4] Humiliation; abasement, as of pride.

[5] Dejection; despondency; lowness. In a great depression of spirit. Baker.

[6] Diminution, as of trade, etc.; inactivity; dullness.

[7] The angular distance of a celestial object below the horizon.

[8] The operation of reducing to a lower degree; -- said of equations.

[9] A method of operating for cataract; couching. See Couch, v. t.,

[10] Angle of depression (Geod.), one which a descending line makes with a horizontal plane. -- Depression of the dewpoint (Meteor.), the number of degreees 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.