معنی کلمه :‌ digressive

Departing from the main subject; partaking of the nature of digression.

1. (Zoöl.) A pore by which the water tubes of various invertebrates open externally. 2. (Bot.) One of certain minute pores in the leaves of some plants. They are without true guardian cells, but in other respects closely resemble ordinary stomata. Goodale.