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

And listen, a number of people went to the hospital for dehydration, including the bodyguard. — Lacey Rose, HollywoodReporter, 21 Oct. 2026

Staying hydrated on long flights is also key since dehydration can lead to the development of blood clots, and compression socks can help keep blood from pooling in the lower limbs. — Jen Christensen, CNN Money, 20 Oct. 2026

Diarrhea or vomiting, common symptoms of the flu or COVID-19, can sometimes lead to dehydration. — Andee Tagle, NPR, 15 Oct. 2026

Heavy alcohol intake can lead to some degree of dehydration and a pounding headache in the morning. — Sheah Rarback, Miami Herald, 14 Oct. 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