Depression
Depression , noun
[Latin depressio: compare French dépression.]
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.
6.
Diminution, as of trade, etc.; inactivity; dullness.
7.
(Astronomy) The angular distance of a celestial object below the horizon.
8.
(Mathematics) The operation of reducing to a lower degree; -- said of equations.
9.
(Surgery) A method of operating for cataract; couching. See Couch, transitive verb, 8.
Collocations (4)
Angle of depression (Geod.) , one which a descending line makes with a horizontal plane.
Depression of the dewpoint (Meteorology) , 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.