| evidence-based medicine | The process of systematically finding, appraising, and using contemporaneous research findings as the basis for clinical decisions. Evidence-based medicine asks questions, finds and appraises the relevant data, and harnesses that information for everyday clinical practice. Evidence-based medicine follows four steps: formulate a clear clinical question from a patient's problem; search the literature for relevant clinical articles; evaluate (critically appraise) the evidence for its validity and usefulness; implement useful findings in clinical practice. The term "evidence based medicine" (no hyphen) was coined at mcmaster medical school in canada in the 1980's to label this clinical learning strategy, which people at the school had been developing for over a decade. (12 Dec 1998) |
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| evident | Clear to the vision; especially, clear to the understanding, and satisfactory to the judgment; as, the figure or colour of a body is evident to the senses; the guilt of an offender can not always be made evident. "Your honor and your goodness is so evident." (Shak) "And in our faces evident the sings Of foul concupiscence." (Milton) Synonym: Manifest, plain, clear, obvious, visible, apparent, conclusive, indubitable, palpable, notorious. See Manifest. Origin: F. Evinent, l. Evidens, -entis; e out + videns, p. Pr. Of videre to see. See Vision. Source: Websters Dictionary (01 Mar 1998) |
| evil | 1. Having qualities tending to injury and mischief; having a nature or properties which tend to badness; mischievous; not good; worthless or deleterious; poor; as, an evil beast; and evil plant; an evil crop. "A good tree can not bring forth evil fruit." (Matt. Vii. 18) 2. Having or exhibiting bad moral qualities; morally corrupt; wicked; wrong; vicious; as, evil conduct, thoughts, heart, words, and the like. "Ah, what a sign it is of evil life, When death's approach is seen so terrible." (Shak) 3. Producing or threatening sorrow, distress, injury, or calamity; unpropitious; calamitous; as, evil tidings; evil arrows; evil days. "Because he hath brought up an evil name upon a virgin of Israel." (Deut. Xxii. 19) "The owl shrieked at thy birth an evil sign." (Shak) "Evil news rides post, while good news baits." (Milton) Evil eye, an eye which inflicts injury by some magical or fascinating influence. It is still believed by the ignorant and superstitious that some persons have the supernatural power of injuring by a look. "It almost led him to believe in the evil eye." (J. H. Newman) Evil speaking, speaking ill of others; calumny; censoriousness. The evil one, the Devil; Satan. Evil is sometimes written as the first part of a compound (with or without a hyphen). In many cases the compounding need not be insisted on. Examples: Evil doer or evildoer, evil speakink or evil-speaking, evil worker, evil wishink, evil-hearted, evil-minded. Synonym: Mischieveous, pernicious, injurious, hurtful, destructive, wicked, sinful, bad, corrupt, perverse, wrong, vicious, calamitious. Origin: OE. Evel, evil, ifel, uvel, AS. Yfel; akin to OFries, evel, D. Euvel, OS. & OHG. Ubil, G. Ubel, Goth. Ubils, and perh. To E. Over. 1. Anything which impairs the happiness of a being or deprives a being of any good; anything which causes suffering of any kind to sentient beings; injury; mischief; harm; opposed to good. "Evils which our own misdeeds have wrought." (Milton) "The evil that men do lives after them." (Shak) 2. Moral badness, or the deviation of a moral being from the principles of virtue imposed by conscience, or by the will of the Supreme Being, or by the principles of a lawful human authority; disposition to do wrong; moral offence; wickedness; depravity. "The heart of the sons of men is full of evil." (Eccl. Ix. 3) 3. Malady or disease; especially in the phrase king's evil, the scrofula. "He [Edward the Confessor] was the first that touched for the evil." (Addison) Source: Websters Dictionary (01 Mar 1998) |
| evilness | The condition or quality of being evil; badness; viciousness; malignity; vileness; as, evilness of heart; the evilness of sin. Source: Websters Dictionary (01 Mar 1998) |
| eviration | Synonym: emasculation. 2. Loss or absence of the masculine, with acquisition of feminine characteristics; a type of effemination. 3. Delusional belief of a man that he has become a woman. Origin: L. E, out, + vir, man (05 Mar 2000) |
| evisceration | Synonym: exenteration. 2. Removal of the contents of the eyeball, leaving the sclera and sometimes the cornea. Synonym: eventration. Origin: L. Eviscero, to disembowel (05 Mar 2000) |
| evisceroneurotomy | Evisceration of the eye with division of the optic nerve. Origin: L. Eviscero, to disembowel, + G. Neuron, nerve, + tome, a cutting (05 Mar 2000) |
| evocation | Induction of a particular tissue produced by the action of an evocator during embryogenesis. Origin: L. Evoco, pp. Evocatus, to call forth, evoke (05 Mar 2000) |
| evocator | A factor in the control of morphogenesis in the early embryo. (05 Mar 2000) |
| evoked potential | An event-related potential, elicited by, and time-lockied to a stimulus. See: evoked response. (05 Mar 2000) |
| evoked potentials | <physiology> The use of electrodes to measure the electrical activity of nerves. May be used as a guide during surgical removal of tumours growing around important nerves. (16 Dec 1997) |
| evoked potentials, auditory | The electric response evoked in the cerebral cortex by acoustic stimulation or stimulation of the auditory pathways. (12 Dec 1998) |
| evoked potentials, auditory, brainstem | Electrical waves in the cerebral cortex generated by brainstem structures in response to auditory click stimuli. These are found to be abnormal in many patients with cerebellopontine angle lesions, multiple sclerosis, or other demyelinating diseases. (12 Dec 1998) |
| evoked potentials, motor | The electrical response evoked in a muscle or motor nerve by electrical or magnetic stimulation. Common methods of stimulation are by transcranial electrical and transcranial magnetic stimulation. It is often used for monitoring during neurosurgery. (12 Dec 1998) |
| evoked potentials, somatosensory | The electric response evoked in the cerebral cortex by stimulation of afferent pathways from peripheral nerves to cerebrum. (12 Dec 1998) |