dehydration

noun

de·​hy·​dra·​tion ˌdē-ˌhī-ˈdrā-shən 

: the process of dehydrating

especially : an abnormal depletion of body fluids

Examples of dehydration in a Sentence

Recent Examples on the Web

Heatwaves drive heatstroke, dehydration, and other health conditions; rising air pollution from haze causes respiratory conditions; floods and natural disasters cause injury while disrupting the day-to-day operations of hospitals and clinics. — Mitch New, Fortune, 30 Sep. 2026

Despite its increasing normalcy, extreme heat can take hikers by surprise, leading to dehydration, heat stroke and exhaustion, which in turn can contribute to falls. — Culture Critic, Los Angeles Times, 30 Sep. 2026

In periods of mild dehydration, when fluids need to be better retained. — Veronica Cristino, Vogue, 29 Sep. 2026

The cause of her death is still unknown, but the whale was consistently undereating, and blood samples before her death showed dehydration, the aquarium said in a post. — Finnegan Belleau, Chicago Tribune, 23 Sep. 2026

Word History

First Known Use

1840, in the meaning defined above

Rhymes for dehydration

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

Medical Definition

dehydration

noun

de·​hy·​dra·​tion ˌdē-hī-ˈdrā-shən 

: the process of dehydrating

especially : an abnormal depletion of body fluids