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
Initial symptoms — which tend to appear within six to 24 hours of ingesting a death cap — can include watery diarrhea, nausea, vomiting, abdominal pain, and dehydration, the state health department said.
—
Jakob Rodgers, Mercury News, 15 Jan. 2026
Symptoms include diarrhea that lasts for three days or is bloody, a high fever (above 102°F), vomiting, and dehydration.
—Cara Lynn Shultz, PEOPLE, 15 Jan. 2026
And dehydration—which tends to shoot up during the winter thanks in part to the drier air—can also spur hunger pangs and cravings if your body misinterprets the signals.
—Caroline Tien, SELF, 15 Jan. 2026
Many problems, including excessive vomiting or dehydration, asthma or pneumonia, or the need for stitches or a minor fracture, can be handled at an urgent care.
—Nicole Villalpando, Austin American Statesman, 15 Jan. 2026
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Cite this Entry
“Dehydration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dehydration. Accessed 20 Jan. 2026.
Medical Definition
dehydration
noun
de·hy·dra·tion
ˌdē-hī-ˈdrā-shən
: the process of dehydrating
especially
: an abnormal depletion of body fluids
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