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A wartlike projection at the apex of the breast on the surface of which the lactiferous ducts open; it is surrounded by a circular pigmented area, the areola. SYN: papilla mammae [TA], mammilla (2), papilla of breast, teat (1), thele, thelium (3). [dim. of A.S. neb, beak, nose (?)]
- aortic n. colloquial term for the radiographic appearance of the left superior intercostal or accessory hemiazygos vein as a bump on the aortic knob.
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nip·ple 'nip-əl n
1) the protuberance of a mammary gland upon which in the female the lactiferous ducts open and from which milk is drawn
2 a) an artificial teat through which a bottle-fed infant nurses
b) a device with an orifice through which the discharge of a liquid can be regulated
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n.
the protuberance at the centre of the breast. In females the milk ducts open at the nipple.
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nip·ple (nipґəl) 1. papilla mammae. 2. any structure shaped like the papilla mammae.Medical dictionary. 2011.