DEHYDRATION By Nugent, Pam M.S. - April 7, 2013 A lack of water to the tissues in our body. Compare hydration. DEHYDRATION: "Dehydration occurs when we lose water through exercise and the thirst function hasn't activated yet." Related Psychology Terms THIRST DEHYDRATION REACTIONS ACIDOSIS CALCIUM-DCFICIENCY DISORDERS OSMOREGULATION PSYCHOGENIC NOCTURNAL POLYDIPSIA WEAR-AND-TEAR THEORY OF AGING THERMOGRAPHY REGENERATIVE MEDICINE TOTAL LIPODYSTROPHY Cite this page: Nugent, Pam M.S., "DEHYDRATION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/dehydration/ (accessed January 19, 2019).