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Apparatus

Origin: L, from apparare, apparatum, to prepare; ad _ prepare to make ready.

1. Things provided as means to some end.

2. Hence: a full collection or set of implements, or utensils, for a given duty, experimental or operative; any complex instrument or appliance, mechanical or chemical, for a specific action or operation; machinery; mechanism.

3. (Science: physiology) a collection of organs all of which unite in a common function; as, the respiratory apparatus.