depression

i. The angular distance of a body below the horizon. The term generally refers to a radar beam.
ii. A region of relatively low barometric pressure. The term depression is usually applied to a certain stage in the development of a tropical cyclone, but it also applies to migratory lows and troughs and to upper air lows and troughs that are only weakly developed.
Various stages in the development of depression.
A depression as marked on synoptic charts.
iii. The amount the gun-sight datum is depressed to allow for the effects of gravity on a weapon during its travel to the target. It is expressed in degrees or milliradians.
iv. A negative altitude.

Aviation dictionary. 2014.

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  • Depression — Depression …   Deutsch Wörterbuch

  • dépression — [ depresjɔ̃ ] n. f. • 1314; lat. depressio « enfoncement », de depressus, p. p. de deprimere → déprimer 1 ♦ Abaissement, enfoncement (produit par une pression de haut en bas ou par toute autre cause). ⇒ affaissement. La légère dépression d un… …   Encyclopédie Universelle

  • depression — depression, clinical depression Mental states characterized by feelings of sadness, hopelessness, and loss of interest, experienced by most individuals. They are deemed clinical (that is a mental illness ) if they are persistent, severe, and out… …   Dictionary of sociology

  • Depression — or depress(ed) may refer to: Medicine Depression (mood), a state of low mood and aversion to activity Mood disorder, a class of mental illnesses featuring depressed mood Major depressive disorder, one of the mood disorders, commonly referred to… …   Wikipedia

  • Depression — Dépression Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom …   Wikipédia en Français

  • Depression — De*pres sion, n. [L. depressio: cf. F. d[ e]pression.] 1. The act of depressing. [1913 Webster] 2. The state of being depressed; a sinking. [1913 Webster] 3. A falling in of the surface; a sinking below its true place; a cavity or hollow; as,… …   The Collaborative International Dictionary of English

  • Depression — Sf Niedergeschlagenheit; wirtschaftlicher Rückgang erw. fach. (16. Jh.) Entlehnung. Entlehnt aus frz. dépression, eigentlich Niederdrückung, Senkung , dieses aus l. dēpressio ( ōnis), einer Ableitung von l. dēprimere (dēpressum) niederdrücken,… …   Etymologisches Wörterbuch der deutschen sprache

  • depression — late 14c. as a term in astronomy, from O.Fr. depression (14c.) or directly from L. depressionem (nom. depressio), noun of action from pp. stem of deprimere to press down, depress (see DEPRESS (Cf. depress)). Attested from 1650s in the literal… …   Etymology dictionary

  • depression — [dē presh′ən, dipresh′ən] n. [ME depressioun < OFr depression < L depressio: see DEPRESS] 1. a depressing or being depressed 2. a depressed part or place; hollow or low place on a surface 3. low spirits; gloominess; dejection; sadness 4. a… …   English World dictionary

  • depression — [n1] low spirits; despair abasement, abjection, abjectness, blahs*, bleakness, blue funk*, bummer, cheerlessness, dejection, desolation, desperation, despondency, disconsolation, discouragement, dispiritedness, distress, dole, dolefulness, dolor …   New thesaurus

  • depression — I noun debasement, decline, deflation, dejection, depreciation, despondence, despondency, disheartenment, dispiritedness, dolefulness, economic decline, gloom, lowering, lowness, maeror, sinking, slump, tristitia associated concepts: economic… …   Law dictionary

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