tubercle

noun tu·ber·cle \ ˈtü-bər-kəl , ˈtyü- \

Definition of tubercle

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 b
2 :a small abnormal discrete lump in the substance of an organ or in the skin; especially :the specific lesion of tuberculosis

Origin and Etymology of tubercle

Latin tuberculum, diminutive of tuber


Medical Dictionary

tubercle

noun tu·ber·cle \ ˈt(y)ü-bər-kəl \

medical Definition of tubercle

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

Learn More about tubercle


Seen and Heard

What made you want to look up tubercle? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to speak evil of

Get Word of the Day daily email!

Test Your Vocabulary

Forms of Government Quiz

  • knupfer-painting-solon-before-croesus
  • A gerontocracy is rule by:
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!