tibia

UK: /ˈtɪbiə/ US: /ˈtɪbiə/ ,(tib′ē ə)

Inflections of 'tibia' (n):

tibiae

npl

tibias

npl

WordReference Random House Learner's Dictionary of American English © 2026

tib•i•a /ˈtɪbiə/   n. [countable] , pl. tib•i•ae /ˈtɪbiˌi/  tib•i•as. 

1. Anatomy the inner of the two bones of the leg, from the knee to the ankle;
   shinbone.

tib•i•al, adj. 

WordReference Random House Unabridged Dictionary of American English © 2026

tib•i•a  (tib′ē ə), n., pl. tib•i•ae (tib′ē ē′), tib•i•as. 

1. Anatomy the inner of the two bones of the leg, that extend from the knee to the ankle and articulate with the femur and the talus;
   shinbone. See diag. under skeleton. 
2. Zoology
   • a corresponding bone in a horse or other hoofed quadruped, extending from the stifle to the hock.
   • (in insects) the fourth segment of the leg, between the femur and tarsus. See diag. under coxa. 

• Latin tībia literally, reed pipe
• 1685–95

tib′i•al, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::

tibia / ˈtɪbɪə/ noun (tibiae / ˈtɪbɪˌiː/, tibias)

1. Also called: shinbone the inner and thicker of the two bones of the human leg between the knee and ankle
   Compare fibula
2. the corresponding bone in other vertebrates
3. the fourth segment of an insect's leg, lying between the femur and the tarsus

Etymology: 16th Century: from Latin: leg, pipe

ˈtibial adjective