Definition of tubercle in English:


Line breaks: tu|ber¦cle
Pronunciation: /ˈtjuːbək(ə)l


1 Anatomy , Zoology , & Botany A small rounded projection or protuberance, especially on a bone or on the surface of an animal or plant.
More example sentences
  • The blood supply of the scaphoid comes from the radial artery, feeding the bone on the dorsal surface near the tubercle and scaphoid waist.
  • Its fibers pass dorsally from an extensive anterior attachment to insert on the pharyngeal raphe, the pharyngeal tubercle of the occipital bone.
  • A terminal segment includes a tubercle that projects dorsally and an anus.
2 Medicine A small nodular lesion in the lungs or other tissues, characteristic of tuberculosis.
More example sentences
  • When this happens, the bacteria become encapsulated in tiny tubercles (round lesions) usually in the lungs which may be seen on a chest X-ray.
  • Responding to the invasion, macrophages may huddle with other immune cells to form little nodules called granulomas, or tubercles.
  • Tuberculoma is a mass of granulation tissue made up of a conglomeration of microscopic small tubercles.


late 16th century: from Latin tuberculum, diminutive of tuber (see tuber).



Pronunciation: /-ˈbəːkjʊlət/
sense 1.
More example sentences
  • In the first stage, ribs are strong and tuberculate and the whorl section is subtrapezoidal with divergent sides.
  • The outer surface of the egg is finely tuberculate.
  • However, it is characterized by short genal and pleural spines, a tuberculate surface texture, and a relatively broad tail spine with a diagnostic median cleft, none of which are seen in Quasimodaspis.

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Pronunciation: ˈretrəˌfleks
turned backward