| angular cheilitis | Inflammation and fissuring radiating from the commissures of the mouth secondary to predisposing factors such as lost vertical dimension in denture wearers, nutritional deficiencies, atopic dermatitis, or Candida albicans infection. Synonym: angular stomatitis, commissural cheilitis, perleche. (05 Mar 2000) |
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| actinic cheilitis | Mucosal atrophy with drying, crusting, and fissuring of the vermillion border of the lower lip in older individuals, resulting from chronic exposure to sunlight; dysplastic (premalignant) changes are noted microscopically, analogous to solar keratosis. Synonym: actinic cheilitis. (05 Mar 2000) |
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| Volkmann's cheilitis | An acquired disorder, of unknown aetiology, of the lower lip characterised by swelling, ulceration, crusting, mucous gland hyperplasia, abscesses, and sinus tracts. Synonym: Baelz' disease, myxadenitis labialis, Volkmann's cheilitis. (05 Mar 2000) |
| cheilitis | <pathology> Inflammation and cracking of the lips. May occur secondary to a vitamin (C or B-complex) or mineral deficiency. (27 Sep 1997) |
| cheilitis exfoliativa | An exfoliative dermatitis; it may be related to atopic dermatitis or to contact sensitivity. (05 Mar 2000) |
| cheilitis glandularis | An acquired disorder, of unknown aetiology, of the lower lip characterised by swelling, ulceration, crusting, mucous gland hyperplasia, abscesses, and sinus tracts. Synonym: Baelz' disease, myxadenitis labialis, Volkmann's cheilitis. (05 Mar 2000) |
| cheilitis granulomatosa | Chronic, diffuse, soft swelling of the lips, of unknown aetiology, microscopically characterised by noncaseating granulomatous inflammation. See: Melkersson-Rosenthal syndrome. (05 Mar 2000) |
| cheilitis venenata | Allergic contact dermatitis of the lips, as in contact cheilitis. (05 Mar 2000) |
| commissural cheilitis | Inflammation and fissuring radiating from the commissures of the mouth secondary to predisposing factors such as lost vertical dimension in denture wearers, nutritional deficiencies, atopic dermatitis, or Candida albicans infection. Synonym: angular stomatitis, commissural cheilitis, perleche. (05 Mar 2000) |
| contact cheilitis | Inflammation of the lips resulting from contact with a primary irritant or specific allergen, including ingredients of lipsticks. (05 Mar 2000) |
| solar cheilitis | Mucosal atrophy with drying, crusting, and fissuring of the vermillion border of the lower lip in older individuals, resulting from chronic exposure to sunlight; dysplastic (premalignant) changes are noted microscopically, analogous to solar keratosis. Synonym: actinic cheilitis. (05 Mar 2000) |
| impetiginous cheilitis | Pyoderma of the lips. (05 Mar 2000) |
| angular | 1. Relating to an angle or to angles; having an angle or angles; forming an angle or corner; sharp-cornered; pointed; as, an angular figure. 2. Measured by an angle; as, angular distance. 3. Lean; lank; raw-boned; ungraceful; sharp and stiff in character; as, remarkably angular in his habits and appearance; an angular female. Angular aperture, Angular distance. See Aperture, Distance. Angular motion, the motion of a body about a fixed point or fixed axis, as of a planet or pendulum. It is equal to the angle passed over at the point or axis by a line drawn to the body. Angular point, the point at which the sides of the angle meet; the vertex. Angular velocity, the ratio of anuglar motion to the time employed in describing. Origin: L. Angularis, fr. Angulus angle, corner. See Angle. <anatomy> A bone in the base of the lower jaw of many birds, reptiles, and fishes. Source: Websters Dictionary (01 Mar 1998) |
| angular acceleration | The rate of change of angular velocity; e.g., when a centrifuge rotor is speeding up, or when there is a simultaneous change in velocity and direction, as in an aircraft in a tight spin. (05 Mar 2000) |
| angular aldehyde | The aldehyde group attached to carbon 13 (between rings C and D) of the steroid nucleus in aldosterone. (05 Mar 2000) |
| angular aperture | The angle, in air, of light that passes from the object to the ends of the diameter of the front lens of the microscope objective. (05 Mar 2000) |