tympanohyal bone

tym·pa·no·hy·al bone

a small nodule of bone forming the base of the cartilaginous styloid process of the temporal bone at birth.

tym·pa·no·hy·al bone

(tim'pă-nō-hī'ăl bōn)
Small nodule of bone forming base of the cartilaginous styloid process of temporal bone at birth.