ulna
noun /ˈʌlnə/
/ˈʌlnə/
(plural ulnae
(anatomy /ˈʌlniː/
/ˈʌlniː/
)- enlarge imagethe longer bone of the two bones in the lower part of the arm between the elbow and the wrist, on the side opposite the thumb
尺骨 see also radius (3)Topics Bodyc2词源late Middle English (denoting the humerus bone): from Latin; related to ell.