noun
middle phalanx
Anatomical term for the middle bone of a finger or toe. Used in medical and biological contexts.
中節骨は指の第二関節を構成する骨です。
The middle phalanx is the bone that forms the second joint of the finger.
Compound of 中 (middle) + 節 (joint) + 骨 (bone). The reading is on'yomi throughout.