| LLF | Laki-Lorand factor; left lateral femoral; left lateral flexion |
|---|---|
| LR | labeled release; laboratory references; laboratory report; labor room; lactated Ringer [solution]; l... |
| LRS | lactated Ringer solution; lateral recess stenosis; lateral recess syndrome; low rate of stimulation;... |
| LVN | lateral ventricular nerve; lateral vestibular nucleus; Licensed Visiting Nurse; Licensed Vocational ... |
| BF | bentonite flocculation; bile flow; black female; blastogenic factor; blister fluid; blood flow; body... |
| couching needle | An obsolete instrument used in couching. (05 Mar 2000) |
|---|---|
| Hagedorn needle | A curved surgical needle flattened on the sides. (05 Mar 2000) |
| cutting needle | A surgical needle with angulated surface designed to puncture tough tissue. (05 Mar 2000) |
| cytometry, flow | Analysis of biological material by detection of the light-absorbing or fluorescing properties of cells or subcellular fractions such as chromosomes passing in a narrow stream through a laser beam. Flow cytometry is used with automated sorting devices to sort successive droplets of the stream into different fractions depending on the fluorescence emitted by each droplet. (12 Dec 1998) |
| Salah's sternal puncture needle | A wide-bore needle for obtaining samples of red marrow from the sternum. (05 Mar 2000) |
| sea needle | <zoology> See Garfish . Source: Websters Dictionary (01 Mar 1998) |
| pulsatile flow | Rhythmic, intermittent propagation of a fluid through a vessel or piping system, in contrast to constant, smooth propagation, which produces laminar flow. The quality of blood flow, whether smooth (laminar) or pulsatile, is important to the integrity of the tissues being artificially perfused by various heart assist devices or in regional perfusion. (12 Dec 1998) |
| sheared flow | <radiobiology> Fluid flow where the magnitude of the fluid velocity changes along a direction perpedicular to the direction of the fluid flow. (Freeway traffic often exhibits sheared flow in that traffic in the fast lane moves more rapidly than traffic in the slow lane with the exits.) Sheared flow typically correlates with reduced transport and enhanced confinement. (This definition is rather informal and may not be fully technically correct - R.F. Heeter) (09 Oct 1997) |
| shear flow | A flow of a material in which parallel planes in the material are displaced in a direction parallel to each other. (05 Mar 2000) |
| shuttle flow | <cell biology> Bulk flow of the cytoplasm of cells. most conspicuous in large cells such as amoebae and the internodal cells of Chara where the rate of movement may be as high as 100 m/sec. See: cyclosis. (18 Nov 1997) |
| hypodermic needle | A hollow needle, similar to but smaller than an aspirating needle, attached to a syringe; used primarily for injection. (05 Mar 2000) |
| spatula needle | A minute needle with a flat (non-cutting) concave surface, used by eye surgeons. (05 Mar 2000) |
| needle | 1. A small instrument of steel, sharply pointed at one end, with an eye to receive a thread, used in sewing. In some needles(as for sewing machines) the eye is at the pointed end, but in ordinary needles it is at the blunt end. 2. See Magnetic needle, under Magnetic. 3. A slender rod or wire used in knitting; a knitting needle; also, a hooked instrument which carries the thread or twine, and by means of which knots or loops are formed in the process of netting, knitting, or crocheting. 4. <botany> One of the needle-shaped secondary leaves of pine trees. See Pinus. 5. Any slender, pointed object, like a needle, as a pointed crystal, a sharp pinnacle of rock, an obelisk, etc. Dipping needle. See Dipping. Needle bar, the reciprocating bar to which the needle of a sewing machine is attached. Needle beam, to shoring, the horizontal cross timber which goes through the wall or a pier, and upon which the weight of the wall rests, when a building is shored up to allow of alterations in the lower part. <botany> Needle furze, the garfish. Origin: OE. Nedle, AS. Ndl; akin to D. Neald, OS. Nadla, G. Nadel, OHG. Nadal, nadala, Icel. Nal, Sw. Nal, Dan. Naal, and also to G. Nahen to sew, OHG. Najan, L. Nere to spin, Gr, and perh. To E. Snare: cf. Gael. & Ir. Snathad needle, Gael. Snath thread, G. Schnur string, cord. Source: Websters Dictionary (01 Mar 1998) |
| needle bath | A bath in which water is projected forcibly against the body in many very fine jets. (05 Mar 2000) |
| needle biopsy | Removal of a sample of tissue from the breast using a wide-core needle with suction. (09 Oct 1997) |