Definition of reservoir
1 : a place where something is kept in store: as a : an artificial lake where water is collected and kept in quantity for use b : a part of an apparatus in which a liquid is held c : supply, store <a large reservoir of educated people>
2 : an extra supply : reserve
3 : an organism in which a parasite that is pathogenic for some other species lives and multiplies usually without damaging its host
Examples of reservoir in a sentence
The pen has a large ink reservoir.
Colleges and universities provide reservoirs of talent for job recruiters.
She found the reservoirs of energy she needed to finish the job.
Origin and Etymology of reservoir
French réservoir, from Middle French, from reserver
First Known Use: 1690
RESERVOIR Defined for English Language Learners
Definition of reservoir for English Language Learners
: a usually artificial lake that is used to store a large supply of water for use in people's homes, in businesses, etc.
: a place (such as a part of a machine) where a liquid is stored
: an extra supply of something
RESERVOIR Defined for Kids
Definition of reservoir for Students
: a place where something (as water) is kept in store for future use
Medical Definition of reservoir
1: a space (as an enlargement of a vessel or the cavity of a glandular acinus) in which a body fluid is stored
2: an organism in which a parasite that is pathogenic for some other species lives and multiplies without damaging its host; also : a noneconomic organism within which a pathogen of economic or medical importance flourishes without regard to its pathogenicity for the reservoir <rats are reservoirs of plague>—compare carrier 1a
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