de·pres·sion /dɪˈprɛʃən, di-/
 壓抑,抑制,沮喪;蕭條,衰退
 de·pres·sion /dɪˈprɛʃən/ 名詞
 降低減壓,抑鬱(症),阻抑,壓低,抑鬱,降低,凹窩
 De·pres·sion n.
 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.   --Baker.
 6. Diminution, as of trade, etc.; inactivity; dullness.
 7. Astron. The angular distance of a celestial object below the horizon.
 8. Math. The operation of reducing to a lower degree; -- said of equations.
 9. Surg. A method of operating for cataract; couching. See Couch, v. t., 8.
 Angle of depression Geod., one which a descending line makes with a horizontal plane.
 Depression of the dewpoint Meteor., 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.
 Depression of the visible horizon. Astron. Same as Dip of the horizon, under Dip.
 Syn: -- Abasement; reduction; sinking; fall; humiliation; dejection; melancholy.
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 depression
      n 1: a mental state characterized by a pessimistic sense of
           inadequacy and a despondent lack of activity [ant: elation]
      2: a long-term economic state characterized by unemployment and
         low prices and low levels of trade and investment [syn: slump,
          economic crisis]
      3: a sunken or depressed geological formation [syn: natural
         depression] [ant: natural elevation]
      4: sad feelings of gloom and inadequacy
      5: a time period during the 1930s when there was a worldwide
         economic depression and mass unemployment [syn: the
         Depression, the Great Depression]
      6: an air mass of lower pressure; often brings precipitation;
         "a low moved in over night bringing sleet and snow" [syn:
         low, low pressure]
      7: a state of depression and anhedonia so severe as to require
         clinical intervention [syn: depressive disorder, clinical
         depression]
      8: a concavity in a surface produced by pressing; "he left the
         impression of his fingers in the soft mud" [syn: impression,
          imprint]
      9: angular distance below the horizon (especially of a
         celestial object)
      10: pushing down; "depression of the space bar on the
          typewriter"