Foam formed by water and a fluorocarbon surfactant, used in firefighting because it floats on flammable liquids lighter than water.
Water in its standard form of H₂O, containing two protium hydrogen atoms, as opposed to heavy water.
The seeping away of a liquid, etc.
A seafloor vent.
Moisture, liquid, gas, etc. that seeps out; a seepage.
A small spring, pool, or other spot where liquid from the ground (e.g. water, petroleum or tar) has oozed to the surface; a place of seeping.
(of a crack etc.) To allow a liquid to pass through, to leak.
To enter or penetrate slowly; to spread or diffuse.
To diminish or wane away slowly.
To ooze or pass slowly through pores or other small openings, and in overly small quantities; said of liquids, etc.