Pronunciation: (lē'kij),[key] —n. 1. an act of leaking; leak.
2. something that leaks in or out.
3. the amount that leaks in or out.
4. Com.an allowance for loss by leaking.
5. Physics,Elect.the loss of all or part of a useful agent, as of the electric current that flows through an insulator (leak'age cur"rent) or of the magnetic flux that passes outside useful flux circuits (leak'age flux").