δῐχο-τομία · dicho-tomia — LSJ
dividing in two, of the moonʼs quarters, Arist. GA 777b22, Gem. 9.3, Simp. in Ph. 455.22; bisection, Theo Sm. p.184H.
point of bisection, Archim. Aequil. 1.6, al.
point of division between wings of army, Ascl. Tact. 2.6.
division into two parts (logically), dichotomy, Arist. PA 644a9, Iamb. Comm.Math. 1.