| spinal veins | The veins that drain the spinal cord; they form a plexus on the surface of the cord from which veins pass along the spinal roots to the internal vertebral venous plexus. Synonym: venae spinales. (05 Mar 2000) |
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| spinalis | Synonym: spinal. Origin: L. (05 Mar 2000) |
| spinalis capitis muscle | <anatomy> An inconstant extension of spinalis cervicis to the occipital bone, sometimes fusing with semispinalis capitis. Synonym: musculus spinalis capitis, biventer cervicis, spinal muscle of head. (05 Mar 2000) |
| spinalis cervicis muscle | <anatomy> An inconstant or rudimentary muscle; origin, spinous processes of sixth and seventh cervical vertebrae; insertion, spinous processes of axis and third cervical vertebra; action, extends cervical spine; nerve supply, dorsal primary rami of cervical. Synonym: musculus spinalis cervicis, musculus spinalis colli, spinal muscle of neck. (05 Mar 2000) |
| spinalis muscle | <anatomy> The medial component of the erector spinae muscle; it is comprised of the spinalis capitis, spinalis cervicis, and spinalis thoracis muscles. Synonym: musculus spinalis, spinal muscle. (05 Mar 2000) |
| spinalis thoracis | <anatomy, muscle> Origin, spinous processes of upper lumbar and two lower thoracic vertebrae; insertion, spinous processes of middle and upper thoracic vertebrae; action, supports and extends vertebral column; nerve supply, dorsal primary rami of thoracic and upper lumbar. Synonym: musculus spinalis thoracis, musculus spinalis dorsi, spinal muscle of thorax. (05 Mar 2000) |
| spinant | An agent increasing the reflex irritability of the spinal cord. (05 Mar 2000) |
| spinate | Spined; having spines. (05 Mar 2000) |
| spindle | See: mitosis, spindle fibre. (18 Nov 1997) |
| spindle cataract | A cataract in which the opacity is fusiform, extending from one pole to the other. Synonym: fusiform cataract. (05 Mar 2000) |
| spindle cell | A fusiform cell, such as those in the deeper layers of the cerebral cortex. (05 Mar 2000) |
| spindle cell carcinoma | <tumour> A carcinoma composed of elongated cells, frequently a poorly differentiated squamous cell carcinoma which may be difficult to distinguish from a sarcoma. Synonym: sarcomatoid carcinoma. (05 Mar 2000) |
| spindle cell lipoma | <tumour> A microscopically distinctive form of lipoma in which adipose tissue is infiltrated by fibroblasts and collagen; usually found in the shoulder or neck of elderly men. (05 Mar 2000) |
| spindle cell nevus | A benign, slightly pigmented or red superficial small skin tumour composed of spindle-shaped, epithelioid, and multinucleated cells that may appear atypical; most common in children, but also appearing in adults. Synonym: benign juvenile melanoma, epithelioid cell nevus, spindle cell nevus. (05 Mar 2000) |
| spindle cell sarcoma | <tumour> A malignant neoplasm, believed to be of mesenchymal origin, composed of elongated, spindle-shaped cells. Synonym: fascicular sarcoma. (05 Mar 2000) |
Synonyms :
Synonyms :
| Spinelli's operation |
the operation of splitting the anterior wall of the prolapsed inverted uterus, reversing the organ, and restoring it to the correct position.
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| spirit blue |
a mixture of diphenylrosaniline and triphenylrosaniline; cf. rosaniline.
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| spiral fracture |
one in which the bone has been twisted apart; called also torsion f. See Plate 18.
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| spinal analgesia |
analgesia produced by injection of an opioid into the subarachnoid space around the spinal cord; cf. spinal anesthesia.
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| spindle cell lipoma |
a rare, benign, circumscribed, painless lesion occurring in the dermis or subcutaneous tissue of the posterior neck or shoulder, particularly in middle-aged or older males; it is characterized by lipocytes, spindle cells, bundles of birefringent collagen, and a myxoid stroma.
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| SPI | a swift whirling motion (usually of a missile) |
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| SPI | prolong or extend |
| SPI | narrate or give a detailed account of |
| SPI | work natural fibers into a thread |
| SPI | form a web by making a thread, as of spiders |
| SPI | make up a story, as in"spin a yarn" |
| SPI | revolve quickly and repeatedly around one's own axis |
| SPI | cause to spin |
| SPI | stream in jets, of liquids |
| SPI | revolve quickly and repeatedly around one's own axis |
| SPI | a spokesperson for a political party or candidate who tries to forestall negative publicity |
| SPI | a clothes dryer that uses centrifugal motion to dry the clothes that are put into it |