Definition of tibia in English:


Line breaks: tibia
Pronunciation: /ˈtɪbɪə

noun (plural tibiae /-bɪiː/ or tibias)

  • 1The inner and typically larger of the two bones between the knee and the ankle (or the equivalent joints in other terrestrial vertebrates), parallel with the fibula.
    More example sentences
    • The cause of Blount disease is unknown, but it causes abnormal growth at the top of the tibia bone by the knee joint.
    • Bruce Latimer, director of the Cleveland Museum of Natural History in Ohio, said an ankle bone and tibia discovered at the site proves the creature walked upright.
    • The kneecap is then moved across to the outer side of the knee to expose the knee joint behind it, between the tibia (shin bone) and the femur (thigh bone).
  • 1.1 Zoology The tibiotarsus of a bird.
    More example sentences
    • A bird with a broken tibia popped off her own cast after a week.
    • Severely affected birds may have a marked bowing of the tibia, be reluctant to move, and have a stilted gait.
    • The bird's tibia (lower leg bone) has been fused with some of the upper bones of the foot to form the tibiotarsus.
  • 1.2 Entomology The fourth segment of the leg of an insect, between the femur and the tarsus.
    More example sentences
    • In addition to the pretarsus, tarsus, tibia and femur, insects have two proximal (closer to the body) segments not shown in the figure.
    • Both sexes have a pair of ‘spurs’ on each hind leg where the tibia, or fourth leg segment, joins the tarsus, or foot.
    • The claw is closeable over its entire length and the prey is fixed between the femur (upper arm) and the tibia (lower arm) of the insect leg.



More example sentences
  • The most common fracture was patellar fracture, followed by fractures of the tibial spine and proximal tibia.
  • When aligned, the surgeon drilled into the medullary canal of the tibia and seated the tibial prosthesis.
  • One patient did require revision of the tibial tubercle osteotomy because of traumatic displacement.


late Middle English: from Latin, 'shin bone'.

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