depression meaning and definition

DEPRESSION noun

Definition of depression (noun)

1. a mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity
   • antonym: elation
2. a long-term economic state characterized by unemployment and low prices and low levels of trade and investment
   • synonyms: economic crisis, slump
3. a sunken or depressed geological formation
   • synonyms: natural depression
   • antonym: elevation
4. sad feelings of gloom and inadequacy
5. a period during the 1930s when there was a worldwide economic depression and mass unemployment
   • synonyms: Great Depression
6. an air mass of lower pressure; often brings precipitation
   • "a low moved in over night bringing sleet and snow"
   • synonyms: low
7. a state of depression and anhedonia so severe as to require clinical intervention
   • synonyms: clinical depression, depressive disorder
8. a concavity in a surface produced by pressing
   • "he left the impression of his fingers in the soft mud"
   • synonyms: impression, imprint
9. angular distance below the horizon (especially of a celestial object)
10. pushing down
    • "depression of the space bar on the typewriter"