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.