| 释义 |
porion por·i·on, pl. po·ri·a (pōr'ē-on, -ē-ă), The central point on the upper margin of the external auditory meatus; as a cephalometric landmark, it is located in the middle of the metal rods of the cephalometer. [G. poros, a passage] por·i·on, pl. poria (pōr'ē-on, -ă) Central point on upper margin of external auditory meatus. [G. poros, a passage] |