Etymology
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catalepsy (n.)

"an attack or abnormal state of muscular rigidity in the limbs," late 14c., cathalempsia, from Medieval Latin catalepsia, from Late Latin catalepsis, from Greek katalepsis "a seizure, a seizing upon, a taking possession," from kataleptos "seized," from katalambanein "to seize upon," from kata "down" (see cata-) + lambanein "to take" (see lemma).

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Definitions of catalepsy

catalepsy (n.)
a trancelike state with loss of voluntary motion and failure to react to stimuli;
From wordnet.princeton.edu