| epicranial aponeurosis | The aponeurosis or intermediate tendon connecting the frontalis and occipitalis muscles to form the epicranius. Synonym: aponeurosis epicranialis, galea aponeurotica, galea. (05 Mar 2000) |
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| epicranial muscle | <anatomy> Composed of the epicranial aponeurosis and the muscles inserting into it, i.e., the occipitofrontalis musculus and temporoparietalis musculus. Synonym: musculus epicranius, epicranial muscle, scalp muscle. (05 Mar 2000) |
| epicranium | 1. <anatomy> The upper and superficial part of the head, including the scalp, muscles, etc. 2. <entomology> The dorsal wall of the head of insects. Origin: NL. See Epi-, and Cranium. Source: Websters Dictionary (01 Mar 1998) |
| epicranius muscle | <anatomy> Composed of the epicranial aponeurosis and the muscles inserting into it, i.e., the occipitofrontalis musculus and temporoparietalis musculus. Synonym: musculus epicranius, epicranial muscle, scalp muscle. (05 Mar 2000) |
| epicrisis | A secondary crisis; a crisis terminating a recrudescence of morbid symptoms following a primary crisis. (05 Mar 2000) |
| epicritic | That aspect of somatic sensation which permits the discrimination and the topographical localization of the finer degrees of touch and temperature stimuli. Compare: protopathic. Origin: G. Epikritikos, adjudicatory, fr. Epi, on, + krino, to separate, judge (05 Mar 2000) |
| epicritic sensibility | See: epicritic. (05 Mar 2000) |
| epictetain | Pertaining to Epictetus, the Roman Stoic philosopher, whose conception of life was to be passionless under whatever circumstances. Origin: Gr, fr. Epictetus. Source: Websters Dictionary (01 Mar 1998) |
| epicycle | 1. A circle, whose center moves round in the circumference of a greater circle; or a small circle, whose center, being fixed in the deferent of a planet, is carried along with the deferent, and yet, by its own peculiar motion, carries the body of the planet fastened to it round its proper center. "The schoolmen were like astronomers which did feign eccentries, and epicycles, and such engines of orbs." (Bacon) 2. <mechanics> A circle which rolls on the circumference of another circle, either externally or internally. Origin: L. Epicyclus, Gr.; upon + circle. See Cycle. Source: Websters Dictionary (01 Mar 1998) |
| epicycloid | <geometry> A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle. Any point rigidly connected with the rolling circle, but not in its circumference, traces a curve called an epitrochoid. The curve traced by a point in the circumference of the rolling circle when it rolls on the concave side of a fixed circle is called a hypocycloid; the curve traced by a point rigidly connected with the rolling circle in this case, but not its circumference, is called a hypotrochoid. All the curves mentioned above belong to the class class called roulettes or trochoids. See Trochoid. Origin: Epicycle: cf. F. Epicycloide. Source: Websters Dictionary (01 Mar 1998) |
| epicystitis | Inflammation of the cellular tissue around the bladder. Origin: epi-+ G. Kystis, bladder, + -itis, inflammation (05 Mar 2000) |
| epicyte | A cell membrane, especially of protozoa; the external layer of cytoplasm in gregarines. Origin: epi-+ G. Kytos, cell (05 Mar 2000) |
| epidemic | <epidemiology> Occurring suddenly in numbers clearly in excess of normal expectancy, said especially of infectious diseases but applied also to any disease, injury or other health related event occurring in such outbreaks. Compare: endemic, sporadic. Origin: Gr. Epidemios = prevalent (13 Nov 1997) |
| epidemic benign dry pleurisy | An acute infectious disease usually occurring in epidemic form, characterised by paroxysms of pain, usually in the chest, and associated with strains of Enterovirus coxsackievirus type B. Synonym: benign dry pleurisy, Bornholm disease, Daae's disease, devil's grip, diaphragmatic pleurisy, epidemic benign dry pleurisy, epidemic diaphragmatic pleurisy, epidemic myalgia, epidemic myositis, myositis epidemica acuta, epidemic transient diaphragmatic spasm, Sylvest's disease. (05 Mar 2000) |
| epidemic cerebrospinal meningitis | An acute infectious disease affecting children and young adults, caused by Neisseria meningitidis; characterised by nasopharyngeal catarrh, headache, vomiting, convulsions, stiffness in the neck (nuchal rigidity), photophobia, constipation, cutaneous hyperesthesia, a purpuric or herpetic eruption, and the presence of Kernig's sign. Fulminant form may cause Waterhouse-Friderichsen syndrome. Synonym: cerebrospinal fever, epidemic cerebrospinal meningitis. (05 Mar 2000) |