Relating to both asterions, especially the biasterionic diameter, or biasterionic width, the shortest distance from one asterion to the other. ... (05 Mar 2000) ... 
Type: Term Pronunciation: bī′as-ter-ē-on′ik Definitions: 1. Relating to both asterions, especially the biasterionic diameter, or biasterionic width, the shortest distance from one asterion to the other.