tetany

tet·a·ny

noun \ˈtet-^ən-ē, ˈtet-nē\

plural tet·a·nies

Definition of TETANY

: a condition of physiological calcium imbalance that is marked by intermittent tonic spasm of the voluntary muscles and is associated with deficiencies of parathyroid secretion or other disturbances (as vitamin D deficiency)