معنی کلمه :‌ scission

The act of dividing with an instrument having a sharp edge.

Any one of numerous species of hymenopterous insects belonging to the family Tenthredinidæ. The female usually has an ovipositor containing a pair of sawlike organs with which she makes incisions in the leaves or stems of plants in which to lay the eggs. The larvæ resemble those of Lepidoptera.