| occlusal pattern | The form of the occlusal surface of a tooth or a row of teeth. Synonym: occlusal pattern. (05 Mar 2000) |
|---|---|
| three-dimensional diffraction pattern | <optics> The diffraction pattern (of a point source) that appears in the three-dimensional space in and near the focal plane. For an aberration-free, diffraction- limited system, the slice of the diffraction pattern in the focal plane is the Airy disk and its surrounding diffraction rings. Above and below focus, the pattern changes periodically along the axis of the light beam so that bright and dark Airy-disk-like patterns appear alternately. The axial period of repeat is spaced twice as far apart as the radial period of repeat in the Airy disk and its diffraction rings (05 Aug 1998) |
| Electron Channeling Pattern | <microscopy> A pattern formed by the periodic backscattering of electrons by the specimen lattice in a transmission electron microscope. Allows determination of crystal structure and lattice parameters in crystals greater than 10 micrometres diameter. Acronym: ECP (05 Aug 1998) |
| juvenile pattern | A precordial T-wave inversion, sometimes with J-ST elevations in an electrocardiogram, resembling that seen in normal children, which occurs as a normal variant in some adults, especially blacks, and especially in leads V1, V2, and V3. (05 Mar 2000) |
| female pattern alopecia | Diffuse partial hair loss in the centroparietal area of the scalp, with preservation of the frontal and temporal hair lines; the most frequent type of androgenic alopecia in women. (05 Mar 2000) |
| female pattern baldness | <dermatology> Hair loss in women that may be associated with aging, hormones (androgens) or genetic predisposition. The pattern of baldness in women is different from that of men. In women there is thinning of the hair all over the scalp, but the frontal hairline is maintained. The hair loss is usually permanent. Treatment has been successful with topical minoxidil in some cases. (27 Sep 1997) |
| Abbe flap | A full-thickness flap of the middle portion of the lower lip that is transferred into the upper lip, or vice versa. (05 Mar 2000) |
| advancement flap | A rectangular flap raised in an elastic area, with its free end adjacent to a defect; the defect is covered by stretching the flap longitudinally until the end comes over it. Synonym: advancement flap, French flap. (05 Mar 2000) |
| arterial flap | A flap that includes a direct specific artery within its longitudinal axis. Synonym: arterial flap. (05 Mar 2000) |
| bilobed flap | A flap consisting of two lobes at approximately right angles, based on a common pedicle. (05 Mar 2000) |
| bipedicle flap | A flap with two pedicles, one at each end. Synonym: double pedicle flap. (05 Mar 2000) |
| bone flap | Portion of cranium removed but left attached to overlying soft tissue structures. (05 Mar 2000) |
| buried flap | A flap denuded of both surface epithelium and superficial dermis and transferred into the subcutaneous tissues. (05 Mar 2000) |
| capsular flap pyeloplasty | A reconstructive procedure for correction of uteropelvic obstruction, whereby a flap of renal capsule is swung down from the renal hilus to enlarge an obstructed intrarenal pelvis and upper ureter; used to correct situations involving loss of renal pelvic tissue which preclude the use of renal pelvis for the reconstruction. (05 Mar 2000) |
| parabiotic flap | A skin flap bridging from one animal to another. (05 Mar 2000) |