infiltration rate

noun
UK /ˌɪnfɪlˈtreɪʃən reɪt/
US /ˌɪnfɪlˈtreɪʃən reɪt/

The speed at which water soaks into the ground.

The infiltration rate of the sandy soil was high, so the puddle disappeared quickly.


OTHER MEANINGS

2. The speed at which something gradually enters or spreads into a group, place, or system.

The infiltration rate of new ideas into the old club was slow.

3. In medicine, the rate at which fluid or cells leak into body tissue.

Doctors monitored the infiltration rate of the IV fluid to avoid swelling.

4. In military use, the pace at which troops secretly move into an area.

The commander reported a steady infiltration rate along the border.