groundwater

noun

ground·​wa·​ter ˈgrau̇nd-ˌwȯ-tər 

-ˌwä-

: water within the earth especially that supplies wells and springs

Examples of groundwater in a Sentence

There were concerns about contaminated groundwater.

Recent Examples on the Web

More broadly, the discovery highlights hidden biodiversity in groundwater systems and suggests older evolutionary lineages preserved underground. —Hanna Wickes, Charlotte Observer, 30 Mar. 2026

Participants on Wednesday said the work group’s focus is wide-ranging, with more than 15 studies underway on groundwater recharging, converting groundwater supplies to surface water, and other efforts around water quantity, quality and conservation. —Frederick Melo, Twin Cities, 29 Mar. 2026

The groundwater flowing through the subterranean cave systems of central Texas are vital for both farming and daily life. —Andrew Paul, Popular Science, 26 Mar. 2026

The agency also extended the municipal water supply to residents and conducted long-term groundwater monitoring, according to the EPA notice. —Maya Wilkins, Chicago Tribune, 26 Mar. 2026

Word History

First Known Use

circa 1889, in the meaning defined above

Rhymes for groundwater

• backwater
• bathwater
• blackwater
• breakwater
• deepwater
• edgewater
• feedwater
• floodwater
• freshwater
• granddaughter
• headwater
• manslaughter

Kids Definition

groundwater

noun

ground·​wa·​ter ˈgrau̇n-ˌdwȯt-ər 

-ˌdwät-

: water within the earth that supplies wells and springs