1. The discharge of a fluid from some container
   - escape, leak, leakage 
2. The process of flowing out
   - effluence, efflux 
3. A natural flow of ground water
   - spring, fountain, outpouring, natural spring

Derived forms: outflows

Type of: discharge, flow, formation, geological formation, outpouring, run

Antonym: inflow

Encyclopedia: Outflow

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