Leaking - definition of leaking by The Free Dictionary 1 To permit (a substance) to escape or pass through a breach or flaw: a damaged reactor leaking radioactivity into the atmosphere 2 To disclose without authorization or official sanction: leaked classified information to a reporter
Leak - Wikipedia The matter leaking in or out can be gas, liquid, a highly viscous paste, or even a fluidized solid such as a powdered or granular solid or other solid particles