Depression

Depression ( dépression of French, depression ',' reduction ') is:

A mental disorder, see Depression
In geomorphology is a depression a depression ( geomorphology )
In weapons technology, the depression in the gun, see Depression mount
In the economy a boom period, see Depression ( economy )
In meteorology a low pressure area
In medicine, a depression, indentation, depression ( depression in the bone ), see Depression (anatomy)
In astronomy, the negative height of a star, which is below the horizon, see Depression (Astronomy)
In astrology, the exaltation of a planet in the zodiac exactly opposite position, see Hypsoma