a mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity a long-term economic state characterized by unemployment and low prices and low levels of trade and investment a sunken or depressed geological formation sad feelings of gloom and inadequacy an air mass of lower pressure; often brings precipitation “a low moved in over night bringing sleet and snow” a state of depression so severe as to require clinical intervention 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) pushing down “depression of the space bar on the typewriter” WordNet for ‘depression’