| MOD | magnetic optic disk; maturity onset diabetes; Medical Officer of the Day; mesio-occlusodistal |
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| MS-DOS | Microsoft Disk Operating System |
| NVD | nausea, vomiting, and diarrhea; neck vein distention; neovascularization of the disk; neurovesicle d... |
| PID | pain intensity difference [score]; pelvic inflammatory disease; photoionization detector; picture im... |
| PIVD | protruded intervertebral disk |
| disk syndrome | <syndrome> A constellation of symptoms and signs, including pain, paresthesias, sensory loss, weakness, and impaired reflexes, due to a compressive radiculopathy caused by intervertebral disk pressure. (05 Mar 2000) |
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| I disk | <cell biology> The isotropic band of the sarcomere of striated muscle, where only thin filaments are found. Unlike the A band, the I band can vary in width depending upon the state of contraction of the muscle when fixed. (18 Nov 1997) |
| injury of intervertebral disk | traumatic cervical discopathy |
| intercalated disk | A specialised intercellular attachment of cardiac muscle comprising gap junctions, fascia adherens, and occasionally desmosomes. (05 Mar 2000) |
| intermediate disk | <cell biology> The line formed where actin filaments attach between two sarcomeres. (11 May 1997) |
| interpubic disk | The disk of fibrocartilage that unites the pubic bones at the pubic symphysis. Synonym: discus interpubicus, interpubic disk, lamina fibrocartilaginea interpubica. (05 Mar 2000) |
| intervertebral disk | <anatomy> The intervertebral discs or nucleus pulposus are a fibro-cartilaginous disc that lie between the vertebral bodies in the spine. These disks are composed of a central gelatinous-like material that provide a cushioning or shock absorbing quality to the spinal column to axial stress. Discs may herniate or rupture, resulting in a condition known as a radiculopathy. (27 Sep 1997) |
| intervertebral disk chemolysis | The dissolving of the nucleus pulposus of a displaced intervertebral disk, usually by the direct injection of a proteolytic enzyme, especially chymopapain, into the diseased disk. (12 Dec 1998) |
| intervertebral disk displacement | An intervertebral disk in which the nucleus pulposus has protruded through surrounding fibrocartilage. This occurs most frequently in the lower lumbar region. (12 Dec 1998) |
| isotropic disk | <cell biology> The isotropic band of the sarcomere of striated muscle, where only thin filaments are found. Unlike the A band, the I band can vary in width depending upon the state of contraction of the muscle when fixed. (18 Nov 1997) |
| optic disk | The portion of the optic nerve seen in the fundus with the ophthalmoscope. It is formed by the meeting of all the retinal ganglion cell axons as they enter the optic nerve. Because the retina at the optic disk has no photoreceptors there is a corresponding blind spot in the visual field. (12 Dec 1998) |
| optic disk drusen | Hyaline bodies occurring in the intra-ocular portion of the optic nerve. They are distinguished from retinal drusen, which lie beneath the retinal pigment epithelium. This disorder is differentiated also from papilledema by the absence of dilated retinal vessels. (12 Dec 1998) |
| tactile disk | A specialised tactile sensory nerve ending in the epidermis, characterised by a terminal cuplike expansion of an intraepidermal axon in contact with the base of a single modified keratinocyte. Synonym: meniscus tactus, Merkel's corpuscle, Merkel's tactile cell, Merkel's tactile disk, tactile disk. (05 Mar 2000) |
| embryonic disk | Germ disk, the point in a telolecithal ovum where the embryo begins to be formed. Synonym: embryonic disk, germinal area, area germinativa. (05 Mar 2000) |
| transverse disk | One of the dark transverse bands seen on examining a striated muscular fibre under the microscope. (05 Mar 2000) |