Medical Dictionary


noun tu·ber·cle \ˈt(y)ü-bər-kəl\

Medical Definition of TUBERCLE

:  a small knobby prominence or excrescence: as a :  a prominence on the crown of a molar tooth b :  a small rough prominence (as the greater tubercle or adductor tubercle) on a bone usually being smaller than a tuberosity and serving for the attachment of one or more muscles or ligaments c :  an eminence near the head of a rib that articulates with the transverse process of a vertebra d :  any of several prominences (as the acoustic tubercle) in the central nervous system that mark the nuclei of various nerves
:  a small discrete lump in the substance of an organ or in the skin; especially :  the specific lesion of tuberculosis consisting of a packed mass of epithelioid cells, giant cells, disintegration products of white blood cells and bacilli, and usually a necrotic center
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