| demodectic acariasis | An infestation of the hair follicles and sebaceous glands with mites of the genus Demodex; they occur in humans and a number of domesticated animals; although asymptomatic in most species, these mites can cause severe and extensive dermatitis ("red mange") in dogs. Synonym: demodectic acariasis, follicular mange. (05 Mar 2000) |
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| demodectic blepharitis | Inflammation of the eyelid associated with Demodex folliculorum. Synonym: blepharitis acarica. Blepharitis follicularis, a deep-seated suppurative inflammation of ciliary follicles and the glands of Zeis and Moll of the eyelid. Synonym: pustular blepharitis. (05 Mar 2000) |
| demodectic mange | An infestation of the hair follicles and sebaceous glands with mites of the genus Demodex; they occur in humans and a number of domesticated animals; although asymptomatic in most species, these mites can cause severe and extensive dermatitis ("red mange") in dogs. Synonym: demodectic acariasis, follicular mange. (05 Mar 2000) |
| Demodex | A genus of very minute (0.1 to 0.4 mm) follicular mites (family Demodicidae) that inhabit the skin and are usually found in the sebaceous glands and hair follicles of mammals, including humans. Origin: G. Demos, tallow, + dex, a woodworm (05 Mar 2000) |
| Demodex bovis | A species that causes large swellings in the skin, filled with fluid or a cheezy material containing mites, which damages the hide of cattle. (05 Mar 2000) |
| Demodex canis | Species causing red or demodectic mange in dogs, characterised by alopecia and commonly associated with staphylococcal pyoderma. (05 Mar 2000) |
| Demodex cati | A species causing mange in cats. (05 Mar 2000) |
| Demodex folliculorum | A very common, universally distributed, and usually nonpathogenic species of mite that inhabits the hair follicles and sebaceous glands of humans, commonly around the nose and scalp margins. Synonym: Acarus folliculorum, Simonea folliculorum. (05 Mar 2000) |
| demography | The study of races, as to births, marriages, mortality, health, etc. Demograph"ic. Origin: Gr. The people. Source: Websters Dictionary (01 Mar 1998) |
| demoiselle | 1. A young lady; a damsel; a lady's maid. 2. <zoology> The Numidian crane (Antropoides virgo); so called on account of the grace and symmetry of its form and movements. 3. <zoology> A beautiful, small dragon fly of the genus Agrion. Origin: F. See Damsel. Source: Websters Dictionary (01 Mar 1998) |
| Demoivre's formula | An obsolete formula for calculating life expectancy. (05 Mar 2000) |
| Demoivre, Abraham | <person> English mathematician, 1667-1754. See: Demoivre's formula. (05 Mar 2000) |
| demon | 1. A spirit, or immaterial being, holding a middle place between men and deities in pagan mythology. "The demon kind is of an inmediate nature between the divine and the human." (Sydenham) 2. One's genius; a tutelary spirit or internal voice; as, the demon of Socrates. [Often written daemon. 3. An evil spirit; a devil. "That same demon that hath gulled thee thus." (Shak) Origin: F. Demon, L. Daemon a spirit, an evil spirit, fr. Gr. A divinity; of uncertain origin. Source: Websters Dictionary (01 Mar 1998) |
| demoness | A female demon. Source: Websters Dictionary (01 Mar 1998) |
| demoniac | Frenzied, fiendish, as if possessed by evil spirits. Origin: G. Daimon, a spirit (05 Mar 2000) |