INCIS'ION, n. s as z. [L. incisio, from incido, to cut.]

1. A cutting; the act of cutting into a substance.

2. A cut; a gash; the separation of the surface of any substance made by a sharp instrument. The surgeon with his knife makes an incision in the flesh, and the gardener, in a tree; but we do not say, an incision is made with a plow or a spade; at least such phraseology is unusual.

3. Separation of viscid matter by medicines.