a branch of the ancient Arians, who arose during the fourth century, and denied the consubstantiality (ὁμοούσιον) of the Son with the Father, but admitted their (ὁμοούσιον) similarity of substance. The leaders of this party were George of Laodicea and Basil of Ancyra.

SEMICIRCLE is that figure which is comprehended between the diameter of the circle and half its circumference.