| heterotopia | Synonym: ectopia. 2. In neuropathology, displacement of gray matter, typically into the deep cerebral white matter. Origin: hetero-+ G. Topos, place (05 Mar 2000) |
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| heterotopia maculae | A condition in which one macula is displaced so that the two foveas are not at corresponding retinal points. Synonym: heterotopia maculae. (05 Mar 2000) |
| heterotopic | Synonym: ectopic. 2. Relating to heterotopia. Origin: hetero-+ topos, place, + suffix -ic, pertaining to (05 Mar 2000) |
| heterotopic bones | Bone's that do not belong to the main skeleton but that regularly develop in certain organs, e.g., the heart, penis, clitoris, and snout of some animals. (05 Mar 2000) |
| heterotopic graft | Transplantation of a tissue or organ into a position it normally does not occupy. (05 Mar 2000) |
| heterotopic gray matter | <radiology> Presence of cortical neurons in an abnormal location secondary to arrest of migrating neuroblasts from ventricular walls to brain surface between 7-24 weeks of gestational age, frequency: 3% of healthy population associated with: agenesis of corpus callosum, aqueductal stenosis, microcephaly, schisencephaly, encephalocele X-ray: single/multiple bilateral subependymal nodules along lateral ventricles Differential diagnosis: subependymal spread of neoplasm, subependymal haemorrhage, vascular malformation, tuberous sclerosis, intraventricular meningioma, neurofibromatosis (12 Dec 1998) |
| heterotopic pregnancy | A pregnancy not in the uterine cavity. (05 Mar 2000) |
| heterotopic stimulus | Any electrical activation from an abnormal locus. (05 Mar 2000) |
| heterotopous | Heterotopic, especially in reference to teratomas composed of tissues that are out of place in the region where found. (05 Mar 2000) |
| heterotopy | 1. <medicine> A deviation from the natural position; a term applied in the case of organs or growths which are abnormal in situation. 2. <biology> A deviation from the natural position of parts, supposed to be effected in thousands of years, by the gradual displacement of germ cells. Origin: Hetero- + Gr. Place: cf. F. Heterotopie. Source: Websters Dictionary (01 Mar 1998) |
| heterotransplantation | Transfer of a heterograft (xenograft). Synonym: heteroplasty. (05 Mar 2000) |
| heterotricha | <zoology> A division of ciliated Infusoria, having fine cilia all over the body, and a circle of larger ones around the anterior end. Origin: NL, fr. Gr. Other +, gen, a hair. Source: Websters Dictionary (01 Mar 1998) |
| heterotrichosis | A condition characterised by hair growth of variegated colour. Origin: hetero-+ G. Trichosis, growth of hair (05 Mar 2000) |
| heterotroph | <biochemistry, biology> An organism that requires carbon compounds from other plant or animal sources and cannot synthesise them itself not an autotroph. (18 Nov 1997) |
| heterotrophic | 1. Relating to or exhibiting the properties of heterotrophy. 2. Relating to a heterotroph. (05 Mar 2000) |