dichotomic

They do not arise from the dichotomic process of classification, but from the polar relations of things.

All the operations of the intellect are dichotomic, and in mathematical logic must be expressed by an equation of the second degree.

In pure thought we must understand the dichotomic process to be the distinction of a positive by a privative, both logical elements of the same thought, as I have elsewhere shown.

To obviate the matter Lamarck conceived and proposed the dichotomic method for the easy determination of species.