| peg | 1. A small, pointed piece of wood, used in fastening boards together, in attaching the soles of boots or shoes, etc.; as, a shoe peg. 2. A wooden pin, or nail, on which to hang things, as coats, etc. Hence, colloquially and figuratively: A support; a reason; a pretext; as, a peg to hang a claim upon. 3. One of the pins of a musical instrument, on which the strings are strained. 4. One of the pins used for marking points on a cribbage board. 5. A step; a degree; especially. In the slang phrase "To take one down peg." "To screw papal authority to the highest peg." (Barrow) "And took your grandess down a peg." (Hudibras) Peg ladder, a ladder with but one standard, into which cross pieces are inserted. Peg tankard, an ancient tankard marked with pegs, so as divide the liquor into equal portions. "Drink down to your peg." . Peg tooth. See Fleam tooth under Fleam. Peg top, a boy's top which is spun by throwing it. Screw peg, a small screw without a head, for fastening soles. Origin: OE. Pegge; cf. Sw. Pigg, Dan. Pig a point, prickle, and E. Peak. Source: Websters Dictionary (01 Mar 1998) |
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| peg-and-socket articulation | <anatomy> A form of union or immovable articulation where a hard part is received into the cavity of a bone, as the teeth into the jaws. Origin: NL, fr. Gr, prop, a bolting together, fr. To fasten with bolts or nails, bolt, nail: cf. F. Gomphose. Source: Websters Dictionary (01 Mar 1998) |
| peg-and-socket joint | <anatomy> A form of union or immovable articulation where a hard part is received into the cavity of a bone, as the teeth into the jaws. Origin: NL, fr. Gr, prop, a bolting together, fr. To fasten with bolts or nails, bolt, nail: cf. F. Gomphose. Source: Websters Dictionary (01 Mar 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) |
| ankle bone | 1. <anatomy> The astragalus. 2. <surgery> A variety of clubfoot (Talipes calcaneus). See the Note under Talipes. 1. A slope; the inclination of the face of a work. 2. <geology> A sloping heap of fragments of rock lying at the foot of a precipice. Origin: L, the ankle, the ankle bone. (26 Nov 1998) |
| anterior condyloid canal of occipital bone | The canal through which the hypoglossal nerve emerges from the skull. Synonym: canalis hypoglossalis, anterior condyloid canal of occipital bone, anterior condyloid foramen. (05 Mar 2000) |