| appearance | 1. The act of appearing or coming into sight; the act of becoming visible to the eye; as, his sudden appearance surprised me. 2. A thing seed; a phenomenon; a phase; an apparition; as, an appearance in the sky. 3. Personal presence; exhibition of the person; look; aspect; mien. "And now am come to see . . . It thy appearance answer loud report." (Milton) 4. Semblance, or apparent likeness; external show. Outward signs, or circumstances, fitted to make a particular impression or to determine the judgment as to the character of a person or a thing, an act or a state; as, appearances are against him. " There was upon the tabernacle, as it were, the appearance of fire." (Num. Ix. 15) "For man looketh on the outward appearance." (1 Sam. Xvi. 7) "Judge not according to the appearance." (John. Vii. 24) 5. The act of appearing in a particular place, or in society, a company, or any proceedings; a coming before the public in a particular character; as, a person makes his appearance as an historian, an artist, or an orator. "Will he now retire, After appearance, and again prolong Our expectation?" (Milton) 6. Probability; likelihood. "There is that which hath no appearance." (Bacon) 7. The coming into court of either of the parties; the being present in court; the coming into court of a party summoned in an action, either by himself or by his attorney, expressed by a formal entry by the proper officer to that effect; the act or proceeding by which a party proceeded against places himself before the court, and submits to its jurisdiction. To put in an appearance, to be present; to appear in person. To save appearances, to preserve a fair outward show. Synonym: Coming, arrival, presence, semblance, pretense, air, look, manner, mien, figure, aspect. Origin: F. Apparence, L. Apparentia, fr. Apparere. See Appear. Source: Websters Dictionary (01 Mar 1998) |
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| herring | <zoology> One of various species of fishes of the genus Clupea, and allied genera, especially. The common round or English herring (C. Harengus) of the North Atlantic. Herrings move in vast schools, coming in spring to the shores of Europe and America, where they are salted and smoked in great quantities. Herring gull The chimaera (C. Monstrosa) which follows the schools of herring. See Chimaera. The opah. Origin: OE. Hering, AS. Haering; akin to D. Haring, G. Haring, hering, OHG. Haring, hering, and prob. To AS. Here army, and so called because they commonly move in large numbers. Cf. Harry. Source: Websters Dictionary (01 Mar 1998) |
| Herring bodies | <pathology> Granules within axons in the posterior lobe of the pituitary gland. Contain neurosecretory hormones. (18 Nov 1997) |
| Herring, Percy | <person> English physiologist, 1872-1967. See: Herring bodies. (05 Mar 2000) |
| herring-worm disease | Infection with roundworms of the genus anisakis. Human infection results from the consumption of fish harboring roundworm larvae. The worms may cause acute nausea and vomiting or may penetrate into the wall of the digestive tract, where they give rise to eosinophilic granulomas in the stomach, intestine, or the omentum. (12 Dec 1998) |
| bone within a bone | <radiology> STOP heavy metal, S: sickle cell disease, T: Thorotrast, O: osteopetrosis, P: Paget's disease, heavy metals, hypervitaminosis D (12 Dec 1998) |
| acute reflex bone atrophy | Atrophy of bones, commonly of the carpal or tarsal bones, following a slight injury such as a sprain. See: causalgia, reflex sympathetic dystrophy. Synonym: acute reflex bone atrophy, posttraumatic osteoporosis, Sudeck's syndrome. Origin: L. English sweat (05 Mar 2000) |
| air-bone gap | The difference between the threshold for hearing acuity by bone conduction and by air conduction. (05 Mar 2000) |
| Albrecht's bone | A small bone between the basioccipital and basisphenoid. (05 Mar 2000) |
| allogeneic bone marrow transplant | <haematology, procedure> A bone marrow transplant using marrow collected from a matched healthy donor, usually a brother or sister. The risks associated with the transplant increase with age and 50 years of age is generally regarded as the upper limit. (13 Nov 1997) |
| alveolar bone | That portion of bone in either the maxilla or the mandible which surrounds and supports the teeth. (12 Dec 1998) |
| alveolar bone loss | The resorption of bone in the supporting structures of the maxilla or mandible as a result of periodontal disease. (12 Dec 1998) |
| alveolar supporting bone | alveolar process |
| amyloidosis: bone manifestations | <radiology> Joint pain without radiographic findings, osteoporosis, especially in axial skeleton, lytic lesions that destroy cortex and invade soft tissue, wrist, scaphoid and lunate lesions that may extend into the carpal tunnel, inducing the classic complaints of carpal tunnel syndrome amyloid arthropathy Differential diagnosis: pigmented villonodular synovitis, synovial chondromatosis, rheumatoid arthritis, TB (12 Dec 1998) |
| aneurysmal bone cyst | <radiology> ABC, 10 - 30 yrs, 75% before skeletal maturity, sites: long bones; also, flat bones Findings: metaphyseal if unfused, metaepiphyseal after fusion, lytic, expansile, thin, continuous rim, thin internal bony strands (12 Dec 1998) |