What is the meaning of Catatonia?

A severe psychiatric condition, often associated with schizophrenia, characterized by a tendency to remain in a rigid state of stupor for long periods which give way to short periods of extreme agitation.

A frozen, unresponsive state, as of electronic equipment.

catatonia

catatonia (a severe condition characterised by a tendency to remain in a rigid state)

catatonia

Source: wiktionary.org