Apparatus

of Apparatus

Things provided as means to some end.

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.

A collection of organs all of which unite in a common function; as, the respiratory apparatus.

The equipment used for a particular purpose

(anatomy) a group of body parts that work together to perform a given function; "the breathing apparatus"