reservoir

noun
res·​er·​voir | \ ˈre-zə-ˌvwär How to pronounce reservoir (audio) , -zər-, -ˌvwȯr also -ˌvȯi How to pronounce reservoir (audio) \

Definition of reservoir

1 : a place where something is kept in store: such 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

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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.
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Recent Examples on the Web

Moccasin is one of the agency’s smallest reservoirs, with a capacity of about 554 acre-feet of water. Peter Fimrite, SFChronicle.com, "Moccasin Dam, which came close to failure last year, is repaired and working," 10 June 2019 Inland lakes where catfish are king include Mosquito, Pymatuning, Berlin and West Branch reservoirs, and Springfield Lake in Summit County. D'arcy Egan, cleveland.com, "Lake Erie walleye fishing on fire off Lorain: NE Ohio Fishing Report for June 7," 7 June 2019 In rivers and many larger reservoirs, such cavities are abundant or at least available. Shannon Tompkins, ExpressNews.com, "Fish in a barrel, or how to spawn cats in a small lake," 6 June 2019 Mastering The Method Grind: Fine Time: 5 to 6 minutes How to do it: Insert paper or permanent filter, measure out grounds, pour unheated water into reservoir, hit button. Eleanor Hildebrandt, Popular Mechanics, "How To Make Really Good Coffee," 5 June 2019 Her body was found in White Rock Lake, a northeast Dallas reservoir, over the weekend, making Lindsey's the most recent case. Eliott C. Mclaughlin, CNN, "Dallas is shaken by a recent string of deadly attacks against transgender women. But the violence may go back earlier," 4 June 2019 Behind them sprung up a sports paradise of reservoirs, and nearly three hundred thousand acres of wildlife refuges, national parks and forests, recreational parks, and campsites. Kevin Baker, Harper's magazine, "Where Our New World Begins," 10 May 2019 However, this had the side affect of letting Lake Oroville, the second-largest reservoir in California, rise to extraordinarily high levels. David Grossman, Popular Mechanics, "The Oroville Dam Almost Flooded Northern California. Now It's Working Again.," 3 Apr. 2019 Maybe a state could randomly add lithium to some of its reservoirs but not others, or, conversely, a high-lithium state could try removing it from the water. Dylan Matthews, Vox, "How our drinking water could help prevent suicide," 24 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reservoir.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of reservoir

1690, in the meaning defined at sense 1

History and Etymology for reservoir

French réservoir, from Middle French, from reserver

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Statistics for reservoir

Last Updated

15 Jun 2019

Look-up Popularity

Time Traveler for reservoir

The first known use of reservoir was in 1690

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More Definitions for reservoir

reservoir

noun

English Language Learners Definition of reservoir

: 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

noun
res·​er·​voir | \ ˈre-zər-ˌvwär How to pronounce reservoir (audio) \

Kids Definition of reservoir

: a place where something (as water) is kept in store for future use

reservoir

noun
res·​er·​voir | \ ˈrez-ə(r)v-ˌwär How to pronounce reservoir (audio) , -ə(r)v-ˌ(w)ȯr How to pronounce reservoir (audio) \

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 sense 1a

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