D defs.my
Entry 1 sense Webster, 1913

Dehydration

/dēhˌ-īd-rāsh'-ən/ · De·hy·dra·tion · IPA /dihaɪˈdɹeɪʃən/
01 n. The act or process of freeing from water; also, the condition of a body from which the water has been removed.
  1. 1.
    The act or process of freeing from water; also, the condition of a body from which the water has been removed.(Chem.)