dehydration

n. lack of water in the body tissues. Dehydration may be absolute, as measured in terms of the difference from normal body water content, or relative, as considered in terms of fluid needed to maintain effective osmotic pressure. The delay before drinking sufficient liquids for complete hydration following water loss through sweating and urination is called voluntary dehydration. Compare hydration.

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Psychology term of the day

January 3rd 2025

ring chromosome 18

a congenital chromosomal disorder characterized by microcephaly, ear and eye abnormalities, and mild to severe cognitive impairment. The condition is not hereditary but due to breakage of the arms of chromosome 18, which fuse to form one or more rings of varying sizes.