As nouns the difference between incision and scission
is that incision is incision, cut while scission is the act of division, separation, cutting or severing.
incision
English
Noun
(
en noun)
A cut, especially one made by a scalpel or similar medical tool in the context of surgical operation.
The act of incising, or cutting into a substance.
- (Milton)
(obsolete) Separation or solution of viscid matter by medicines.
scission
English
Noun
(
en noun)
the act of division, separation, cutting or severing
cleavage