Annulus: A ringlike structure, or any body part that is shaped like a ring. Applied to many small ring-shaped structures.
The base of a heart valve that supports the valve’s leaflets is called the annulus. A ring-shaped pancreas that encircles the duodenum is an annular pancreas.
“Annulus” is a misspelling of the Latin “anulus” (a little ring), the diminutive of the Latin “anus” (a ring of more substantial size).
- Anogenital tract
Anogenital tract: Angiogenital tract is a term used to refer to both the anus and genital tract. The genital tract encompasses the external and internal sex organs in both men and women. The term anogenital tract is often used in the categorization and/or description of disease processes that can affect both of these anatomic regions. […]
Anomaly: Any deviation from normal, out of the ordinary. In medicine, an anomaly is usually something that is abnormal at birth.
- Anomaly, congenital
Anomaly, congenital: A birth defect. A minor congenital anomaly is an unusual anatomic feature such as a short second toe that is of no serious medical or cosmetic consequence. By contrast, a major congenital anomaly is a defect such as a cleft palate that is of serious medical or cosmetic consequence.
Anomia: A problem with word finding. Impaired recall of words with no impairment of comprehension or the capacity to repeat the words. In “The Case of Anna H.” who had anomia, the neurologist/writer Oliver Sacks noted that: “When I showed her some kitchen matches, she recognized them at once, visually, but could not say the […]
Anonymize: Or anonymise. To remove the name. To make nameless. “Data for more than 60 variables were extracted from anonymised records of 745 SIDS cases and 2411 live controls.” (The Lancet 2004; 363: 185)