permeation (n.)
- brewing
- decoction
- diffusion
- drenching
- ducking
- impregnation
- infiltration
- infusion
- injection
- instillation
- instillment
- interpenetration
- leaching
- maceration
- penetration
- percolation
- pervasion
- saturation
- soak
- soakage
- soaking
- souse
- sousing
- suffusion
- transfusion