单词	tubercles
释义	tubercle noun tu·​ber·​cle ˈtü-bər-kəl  ˈtyü- 1 : a small knobby prominence or excrescence especially on a plant or animal : nodule: such as a : a protuberance near the head of a rib that articulates with the transverse process of a vertebra b : any of several prominences in the central nervous system c : nodule sense b 2 : a small abnormal discrete lump in the substance of an organ or in the skin especially : the specific lesion of tuberculosis Example Sentences Recent Examples on the Web Voight and colleagues then studied the animals' physical structures, including their arm suckers, warts, and tubercles, or little bumps inside the warts that give them texture. Liz Langley, National Geographic, 8 Oct. 2019 In turn, the ruptured tubercles attract dissolved copper, spurring a chemical reaction that can pit and weaken the surrounding steel. Peter Passi / Forum News Service, Twin Cities, 5 Sep. 2019 Those tubercles can be opened by the scouring power of winter ice. Peter Passi / Forum News Service, Twin Cities, 5 Sep. 2019 Allison and his colleagues also found lesions (called tubercles) and Mycobacterium tuberculosis bacteria in the boy’s lungs, heart, liver, and right kidney. Kiona N. Smith, Ars Technica, 25 Sep. 2018 According to Carly Cassella of Science Alert, the critter boasts a number of features that are not seen in any other modern turtle, like the two rows of tubercles that act like feelers. Brigit Katz, Smithsonian, 13 Apr. 2018 Word History Etymology Latin tuberculum, diminutive of tuber First Known Use 1556, in the meaning defined at sense 1 Phrases Containing tubercle tubercle bacillus tubercle bacillus Medical Definition tubercle noun tu·​ber·​cle ˈt(y)ü-bər-kəl  1 : 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 2 : 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 tubercles noun plural of tubercle as in cysts Synonyms & Similar Words Relevance cysts warts polyps malignancies carcinomas lymphomas tumors melanomas outgrowths growths excrescences cancers neoplasms carcinomata melanomata lymphomata lumps excrescencies
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