διχοτομία
ἡ
A.
dividing in two, of the moon's quarters, Arist. GA 777b22, Gem. 9.3, Simp. in Ph. 455.22; bisection, Theo Sm.p.184H.
2.
point of bisection, Archim. Aequil. 1.6, al.
b.
point of division between wings of army, Ascl. Tact. 2.6.
II.
division into two parts (logically), dichotomy, Arist. PA 644a9, Iamb. Comm.Math. 1.