| CH | case history; Chediak-Higashi [syndrome]; chiasma; Chinese hamster; chloral hydrate; cholesterol; Ch... |
|---|---|
| CR | calculation rate; calculus removed; calorie-restricted; cardiac rehabilitation; cardiac resuscitatio... |
| Cr | chromium; cranium, cranial; creatinine; crown |
| CRD | carbohydrate-recognition domain; chronic renal disease; chronic respiratory disease; child restraint... |
| CRL | cell repository line; Certified Record Librarian; complement receptor location; complement receptor ... |
| crown glass | A compound of lime, potash, alumina, and silica; commonly used in lenses; has a low dispersion (52.2) relative to index of refraction (1.523). (05 Mar 2000) |
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| crown-heel length | Length of an outstretched embryo or foetus from skull vertex to heel. See: Streeter's developmental horizon(s). (05 Mar 2000) |
| crown inclination | <dentistry> A tooth movement in which the root of the tooth is tipped toward cheeks (lips) or toward the lingual (palate) of the mouth. (08 Jan 1998) |
| crown lengthening | Technique combining controlled eruptive tooth movement and incision of the supracrestal gingival attachment to allow for proper restoration of a destroyed or damaged crown of a tooth. Controlled eruption of the tooth is obtained using orthodontic appliances. During this eruptive phase, repeated incisions are made at the junctional epithelium of the sulcus and the supracrestal connective tissue to prevent coronal displacement of the gingiva and of the attachment apparatus. (12 Dec 1998) |
| crown of head | The topmost part of the head. Synonym: crown of head. (05 Mar 2000) |
| crown of tooth | The portion of a tooth covered with enamel. Synonym: corona dentis, anatomical crown. (05 Mar 2000) |
| crown of Venus | Papular lesions of secondary syphilis on the forehead near the hair margin. See: collar of Venus. (05 Mar 2000) |
| crown-rump length | In utero measurement corresponding to the sitting height (crown to rump) of the foetus. Length is considered a more accurate criterion of the age of the foetus than is the weight. The average crown-rump length of the foetus at term is 36 cm. (12 Dec 1998) |
| crown tubercle | Tubercle of cuneate nucleus, the bulbous rostral extremity of the fasciculus cuneatus corresponding to the position of the cunate nucleus, lying lateral to the clava and separated from the tuberculum cinereum on its lateral side by the posterior lateral sulcus. Synonym: tuberculum nuclei cuneati, tuberculum cuneatum, wedge-shaped tubercle. (05 Mar 2000) |
| tooth crown | The upper part of the tooth, which joins the lower part of the tooth (tooth root) at the cervix (tooth cervix) at a line called the cementoenamel junction. The entire surface of the crown is covered with enamel which is thicker at the extremity and becomes progressively thinner toward the cervix. (12 Dec 1998) |
| jacket crown | A hollow crown of acrylic resin, fused porcelain or cast gold, combinations of gold and acrylic or gold and porcelain; it fits over the prepared stump of the natural crown. (05 Mar 2000) |
| anal triangle | The posterior portion of the perineal region through which the anal canal opens; bounded by a line through both isehial tuberosities, the sacrotuberous ligaments and the coccyx. Synonym: regio analis, anal region. (05 Mar 2000) |
| anterior triangle of neck | The area of the neck bounded by the mandible, the anterior border of the sternocleidomastoid muscle, and the anterior midline of the neck; it is subdivided into carotid, muscular, submandibular, and submental triangles. Synonym: anterior region of neck, regio cervicalis anterior, trigonum cervicale anterius. (05 Mar 2000) |
| Assezat's triangle | A triangle formed by lines connecting the nasion with the alveolar and nasal point; used to indicate prognathism in comparative craniology. (05 Mar 2000) |
| auricular triangle | A triangle formed by the base of the auricle and by lines drawn from the true tip of the auricle to the extremities of the base. (05 Mar 2000) |