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Residence time (disambiguation) 
Summary
Look up residence time or residence times in Wiktionary, the free dictionary.
Residence time is the time that a particle of matter spends in a system.
Residence time may also refer to:
- Residence time of lake water, the time that water spends in a particular lake
- Residence time (statistics), the average amount of time it takes for a random process to reach a certain boundary value