The point of meeting of the parietomastoid, occipitomastoid, and lambdoidal sutures is known as the asterion.    From Wordnik.com.  [II. Osteology. 5c. The Exterior of the Skull] Reference

The point of meeting of this angle with the occipital and the mastoid part of the temporal is named the asterion.    From Wordnik.com.  [II. Osteology. 5a. 2. The Parietal Bone] Reference

Narrow Shore asterion.    From Wordnik.com.  [Darkness at noon] Reference