auricular arc

au·ric·u·lar arc

, binauricular arc
a line carried over the cranium from the center of one external auditory meatus to that of the other.
Synonym(s): interauricular arc

au·ric·u·lar arc

, binauricular arc (aw-rikyū-lăr ahrk, bin)
Line carried over the cranium from center of one external auditory meatus to that of the other.