| emetics | Agents that cause vomiting. They may act directly on the gastrointestinal tract, bringing about emesis through local irritant effects, or indirectly, through their effects on the chemoreceptor trigger zone in the postremal area near the medulla. (12 Dec 1998) |
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| emetine | <chemistry> A white crystalline bitter alkaloid extracted from ipecacuanha root, and regarded as its peculiar emetic principle. See: Emetic. Source: Websters Dictionary (01 Mar 1998) |
| emetocathartic | 1. Both emetic and cathartic. 2. An agent that causes vomiting and purging of the lower intestines at the same time. Origin: Gr. Vomiting + E. Cathartic. (21 Jun 2000) |
| emetogenic | <pharmacology> Induces vomiting. Origin: Gr. Gennan = to produce (09 Oct 1997) |
| emetogenicity | The property of being emetogenic. (05 Mar 2000) |
| emew | <zoology> A large Australian bird, of two species (Dromaius Novae-Hollandiae and D. Irroratus), related to the cassowary and the ostrich. The emu runs swiftly, but is unable to fly. Alternative forms: emeu and emew. The name is sometimes erroneously applied, by the Brazilians, to the rhea, or South American ostrich. Emu wren. Origin: Cf. Pg. Ema ostrich, F. Emou, emeu, emu. Source: Websters Dictionary (01 Mar 1998) |
| EMF | The force (measured in volts) that causes the flow of electricity from one point to another. (05 Mar 2000) |
| emforth | According to; conformably to. Emforth my might, so far as lies in my power. Origin: AS. Em-, emn-, in comp. Equiv. To efen equal + for forth. Source: Websters Dictionary (01 Mar 1998) |
| EMG | <investigation> A test which measures muscle response to nerve stimulation. Used to evaluate muscle weakness and to determine if the weakness is related to the muscles themselves or a problem with the nerves that supply the muscles. Abnormal results may be seen in myasthenia gravis, polymyositis, carpal tunnel syndrome, amyotrophic lateral sclerosis, alcoholic neuropathy, cervical spondylosis, dermatomyositis, familial periodic paralysis, Guillain-Barre syndrome, Lambert-Eaton syndrome, Friedreich's ataxia, mononeuritis multiplex, peripheral neuropathy, sciatic nerve disease and a variety of peripheral nerve disorders. Acronym: EMG (19 Jan 1998) |
| EMG examination | Needle electrode examination portion of the electrodiagnostic examination (limited sense), synonym for entire electrodiagnostic examination, including not only the needle electrode examination (electromyogram proper), but the nerve conduction studies as well (expanded sense). (05 Mar 2000) |
| EMG syndrome | <syndrome> This syndrome, of unknown cause, is characterised by a group of the following findings: large tongue, organ enlargement (visceromegaly), large body size, umbilical hernia and neonatal hypoglycaemia. Evidence suggests a genetic lesion. Birth weight is often more than 8 pounds. Complications include Wilm's tumour, seizures, aspiration and hypoglycaemia. (27 Sep 1997) |
| emgalla | <zoology> [Native name. The South African wart hog. See Wart hog. Source: Websters Dictionary (01 Mar 1998) |
| EMI scan | Historically, the name commonly used for computed tomography of the head, the technique devised by Hounsfield, who was a scientist at EMI, an English electronics firm. (05 Mar 2000) |
| emiction | Rarely used term for urination. (05 Mar 2000) |
| emictory | <pharmacology> An agent that promotes the excretion of urine. Origin: Gr. Diouretikos = promoting urine (18 Nov 1997) |