| LAS | laboratory automation system; lateral amyotrophic sclerosis; laxative abuse syndrome; left anterior-... |
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| LASH | left anterior superior hemiblock |
| LSR | lanthanide shift reagent; lecithin/ sphingomyelin ratio; left superior rectus [muscle]; liver/spleen... |
| LSVC | left superior vena cava |
| MSO | management service organization; medial superior olive; medical staff organization |
| spinous process of tibia | Intercondyloid eminence, an elevation on the proximal extremity of the tibia between the two articular surfaces. Synonym: eminentia intercondylaris, eminentia intercondyloidea, spinous process of tibia. (05 Mar 2000) |
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| spontaneous process | <chemistry> A process that occurs without outside intervention. Spontaneity is independent of rate. To be spontaneous a process must increase the entropy of the universe. (09 Jan 1998) |
| nasal process | The upward extension from the body of the maxilla, which articulates with the frontal bone. Synonym: nasal process, processus frontalis maxillae. (05 Mar 2000) |
| Stieda's process | A projection of the talus bearing medial and lateral tubercles; it is posterior and inferior to the trochlea. Synonym: processus posterior tali, Stieda's process. (05 Mar 2000) |
| stochastic process | A process that incorporates some element of randomness. Origin: G. Stochastikos, pertaining to guessing, fr. Stochazomai, to guess (05 Mar 2000) |
| styloid process of fibula | The pointed upper end of the fibular head to which is attached the arcuate popliteal ligament and part of the biceps femoris tendon. Synonym: apex capitis fibulae, styloid process of fibula. (05 Mar 2000) |
| styloid process of radius | A thick, pointed, palpable projection on the lateral side of the distal extremity of the radius. Synonym: processus styloideus radii. (05 Mar 2000) |
| styloid process of temporal bone | A slender pointed projection running downward and slightly forward from the base of the inferior surface of the petrous portion of the temporal bone where it joins the tympanic portion; it gives attachment to the styloglossus, stylohyoid, and stylopharyngeus muscles and the stylohyoid and stylomandibular ligaments. Synonym: processus styloideus ossis temporalis. (05 Mar 2000) |
| styloid process of third metacarpal bone | A pointed projection from the dorsolateral angle of the base of the third metacarpal bone; it sometimes exists as a separate ossicle. Synonym: processus styloideus ossis metacarpalis III. (05 Mar 2000) |
| styloid process of ulna | A cylindrical, pointed palpable projection from the medial and posterior aspect of the head of the ulna, to the tip of which is attached the ulnar collateral ligament of the wrist. Synonym: processus styloideus ulnae. (05 Mar 2000) |
| notochordal process | In the embryo, a midline column of cells that migrate forward from the primitive node to form the notochord. See: head process. (05 Mar 2000) |
| nursing process | The sum total of nursing activities which includes assessment (identifying needs), intervention (ministering to needs), and evaluation (validating the effectiveness of the help given). (12 Dec 1998) |
| supracondylar process | An occasional spine projecting from the anteromedial surface of the humerus about 5 cm above the medial epicondyle to which it is joined by a fibrous band. The supracondylar foramen thus formed transmits the brachial artery and median nerve. Synonym: processus supraepicondylaris humeri, supraepicondylar process. (05 Mar 2000) |
| supraepicondylar process | An occasional spine projecting from the anteromedial surface of the humerus about 5 cm above the medial epicondyle to which it is joined by a fibrous band. The supracondylar foramen thus formed transmits the brachial artery and median nerve. Synonym: processus supraepicondylaris humeri, supraepicondylar process. (05 Mar 2000) |
| dendritic process | A long, branching outgrowth or extension from a neuron, that carries electrical signals from synapses to the cell body, unlike an axon that carries electrical signals away from the cell body. Each nerve cell usually has many dendrites. This classical definition, however, lost some weight with the discovery of axo-axonal and dendro-dendritic synapses. (29 Sep 1997) |