permeationrate
nounUK /ˌpɜːmiˈeɪʃən reɪt/
US /ˌpɜːrmiˈeɪʃən reɪt/
The speed at which something passes slowly through a material.
The permeation rate of water through the thin plastic sheet was measured in the lab.
RELATED WORDS
OTHER MEANINGS
2. The measured speed at which a gas or liquid moves through a barrier or membrane.
Engineers tested the permeation rate of oxygen through the packaging film.
3. The pace at which a substance spreads into or through another material over time.
A high permeation rate meant the chemical soaked into the glove quickly.
4. In materials science, the flux of a permeant through a solid divided by its driving force.
The reported permeation rate depended on both pressure and temperature.