| corona | A ring of tissue arising from the corolla or perianth of a flower and standing between the perianth lobes and the stamens. (09 Oct 1997) |
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| corona capitis | The topmost part of the head. Synonym: crown of head. (05 Mar 2000) |
| corona ciliaris | The circular figure on the inner surface of the ciliary body, formed by the processes and folds (plicae) taken together. Synonym: ciliary crown, ciliary wreath. (05 Mar 2000) |
| corona clinica | That part of the crown of a tooth visible in the oral cavity. Synonym: corona clinica. (05 Mar 2000) |
| corona dentis | The portion of a tooth covered with enamel. Synonym: corona dentis, anatomical crown. (05 Mar 2000) |
| corona glandis | The prominent posterior border of the glans penis. Synonym: corona glandis. (05 Mar 2000) |
| corona of glans penis | The prominent posterior border of the glans penis. Synonym: corona glandis. (05 Mar 2000) |
| corona radiata | A fan-shaped fibre mass on the white matter of the cerebral cortex, composed of the widely radiating fibres of the internal capsule; a single layer of columnar cells derived from the cumulus oophorus, which anchor on the pellucid zone of the oocyte in a secondary follicle. Synonym: radiate crown. (05 Mar 2000) |
| corona seborrheica | A red band at the hair line along the upper border of the forehead and temples occasionally observed in seborrheic dermatitis of the scalp. (05 Mar 2000) |
| corona veneris | Papular syphilitic lesions (secondary eruption) along the anterior margin of the scalp or on the back of the neck. See: crown of Venus. (05 Mar 2000) |
| Zinn's corona | <anatomy, nerve> A network of branches of the short ciliary arteries on the sclera around the point of entrance of the optic nerve. Synonym: circulus vasculosus nervi optici, circulus arteriosus halleri, circulus zinnii, Haller's circle, Zinn's corona, Zinn's vascular circle. (05 Mar 2000) |
| zona corona | An irregularly disposed collection of visible veins seen in the skin of people usually of or past middle age; it has no specific connection with any deep structure, such as the diaphragm, and no necessary connection with underlying visceral disease. Synonym: zona corona. (05 Mar 2000) |
| alveolonasal line | A line connecting the alveolar point and the nasion. (05 Mar 2000) |
| Amberg's lateral sinus line | A line dividing the angle formed by the anterior edge of the mastoid process and the temporal line. (05 Mar 2000) |
| anocutaneous line | The line between the simple columnar epithelium of the rectum and the stratified epithelium of the anal canal. Synonym: linea anocutanea, anocutaneous line, dentate line. (05 Mar 2000) |