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