| flight of ideas | An uncontrollable symptom of the manic phase of a bipolar depressive disorder in which streams of unrelated words and ideas occur to the patient at a rate that is impossible to vocalise despite a marked increase in the individual's overall output of words. See: mania. (05 Mar 2000) |
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| permanent dominant idea | An exaggerated notion, belief, or delusion that persists, despite evidence to the contrary, and controls the mind, the obstinate conviction of a psychotic person regarding the correctness of his delusion. Synonym: idee fixe, overvalued idea, permanent dominant idea. (05 Mar 2000) |
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| compulsive idea | A fixed and repetitively recurring idea. (05 Mar 2000) |
| hyperquantivalent idea | An idea that dominates all thought and cannot easily be changed. (05 Mar 2000) |
| dominant idea | An idea that governs all one's actions and thoughts. (05 Mar 2000) |
| idea | Any mental image or concept. Origin: G. Semblance (05 Mar 2000) |
| idea of reference | The misinterpretation that other people's statements or acts or neutral objects in the environment are directed toward one's self when, in fact, they are not. (05 Mar 2000) |
| overvalued idea | An exaggerated notion, belief, or delusion that persists, despite evidence to the contrary, and controls the mind, the obstinate conviction of a psychotic person regarding the correctness of his delusion. Synonym: idee fixe, overvalued idea, permanent dominant idea. (05 Mar 2000) |
| fixed idea | An exaggerated notion, belief, or delusion that persists, despite evidence to the contrary, and controls the mind, the obstinate conviction of a psychotic person regarding the correctness of his delusion. Synonym: idee fixe, overvalued idea, permanent dominant idea. (05 Mar 2000) |
| space flight | Travel beyond the earth's atmosphere. (12 Dec 1998) |
| time of flight | The time for a photon created by annihilation of a positron-electron pair to reach a detector; since annihilation photons are created in pairs and travel in opposite directions at about 3 × 1010 cm/sec, measurement of the difference in arrival time at detectors with sub-nanosecond resolution allows calculation of the location of the event; the basic physics of positron emission tomography. (05 Mar 2000) |
| fight or flight reaction | The theory advanced by Walter Cannon, that in the autonomic nervous system and the effectors connected with it, the organism in situations of danger requiring either fight or flight is provided with a check-and-drive mechanism that puts it in readiness to meet emergencies with undivided energy output. Also known as the emergency theory. (05 Mar 2000) |
| flight | 1. The act or flying; a passing through the air by the help of wings; volitation; mode or style of flying. "Like the night owl's lazy flight." (Shak) 2. The act of fleeing; the act of running away, to escape or expected evil; hasty departure. "Pray ye that your flight be not in the winter." (Matt. Xxiv. 20) "Fain by flight to save themselves." (Shak) 3. Lofty elevation and excursion;a mounting; a soaing; as, a flight of imagination, ambition, folly. "Could he have kept his spirit to that flight, He had been happy." (Byron) "His highest flights were indeed far below those of Taylor." (Macaulay) 4. A number of beings or things passing through the air together; especially, a flock of birds flying in company; the birds that fly or migrate together; the birds produced in one season; as, a flight of arrows. "Swift flights of angels ministrant." (Milton) "Like a flight of fowl Scattered winds and tempestuous gusts." (Shak) 5. A series of steps or stairs from one landing to another. 6. A kind of arrow for the longbow; also, the sport of shooting with it. See Shaft. "Challenged Cupid at the flight." (Shak) "Not a flight drawn home E'er made that haste that they have." (Beau. & Fl) 7. The husk or glume of oats. <zoology> Flight feathers, the wing feathers of a bird, including the quills, coverts, and bastard wing. See Bird. To put to flight, To turn to flight, to compel to run away; to force to flee; to rout. Synonym: Pair, set. See Pair. Origin: AS. Fliht, flyht, a flying, fr. Fleogan to fly; cf. Flyht a fleeing, fr. Fleon to flee, G. Flucht a fleeing, Sw. Flykt, G. Flug a flying, Sw. Flygt, D. Vlugt a fleeing or flying, Dan. Flugt. See Flee, Fly. Source: Websters Dictionary (01 Mar 1998) |
| flight blindness | Visual blackout in aviators. See: amaurosis fugax. (05 Mar 2000) |
| flight into disease | Gain through falling ill or assuming the sick role. See: primary gain, secondary gain. (05 Mar 2000) |
| flight into health | In dynamic psychotherapy, the early but often only temporary disappearance of the symptoms that ostensibly brought the patient into therapy; a defense against the anxiety engendered by the prospect of further psychoanalytic exploration of the patient's conflicts. (05 Mar 2000) |