单词 | depression |
释义 | depression /di presh"euhn/, n. 1. the act of depressing. 2. the state of being depressed. 3. a depressed or sunken place or part; an area lower than the surrounding surface. 4. sadness; gloom; dejection. 5. Psychiatry. a condition of general emotional dejection and withdrawal; sadness greater and more prolonged than that warranted by any objective reason. Cf. clinical depression. 6. dullness or inactivity, as of trade. 7. Econ. a period during which business, employment, and stock-market values decline severely or remain at a very low level of activity. 8. the Depression. See Great Depression. 9. Pathol. a low state of vital powers or functional activity. 10. Astron. the angular distance of a celestial body below the horizon; negative altitude. 11. Survey. the angle between the line from an observer or instrument to an object below either of them and a horizontal line. 12. Phys. Geog. an area completely or mostly surrounded by higher land, ordinarily having interior drainage and not conforming to the valley of a single stream. 13. Meteorol. an area of low atmospheric pressure. [1350-1400; ME ( < AF) < ML depression- (s. of depressio), LL: a pressing down, equiv. to L depress(us) (see DEPRESS) + -ion- -ION] Syn. 4. discouragement, despondency. |
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