dehydration

[ dee-hahy-drey-shuh n ]
/ ˌdi haɪˈdreɪ ʃən /

noun

the act or process of dehydrating.
an abnormal loss of water from the body, especially from illness or physical exertion.

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Origin of dehydration

First recorded in 1850–55; dehydrate + -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for dehydration

Medical definitions for dehydration

dehydration
[ dē′hī-drāshən ]

n.

Excessive loss of water from the body or from an organ or a body part, as occurs during illness or fluid deprivation.
The process of removing water from a substance or compound.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for dehydration

dehydration
[ dē′hī-drāshən ]

The process of losing or removing water or moisture.
A condition caused by the excessive loss of water from the body, which causes a rise in blood sodium levels. Since dehydration is most often caused by excessive sweating, vomiting, or diarrhea, water loss is usually accompanied by a deficiency of electrolytes. If untreated, severe dehydration can lead to shock.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for dehydration

dehydration

The removal of water; in chemistry, the loss of two hydrogen atoms for every oxygen atom (see H2O).

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.