Apparatus (noun) Definition, Meaning & Examples

noun, plural ap·pa·rat·us, ap·pa·rat·us·es.
  1. a group or combination of instruments, machinery, tools, materials, etc., having a particular function or intended for a specific use: Our town has excellent fire-fighting apparatus.
  2. any complex instrument or mechanism for a particular purpose.
  3. any system or systematic organization of activities, functions, processes, etc., directed toward a specific goal: the apparatus of government; espionage apparatus.
  4. a group of structurally different organs working together in the performance of a particular function: the digestive apparatus.
noun plural -ratus or -ratuses
  1. a collection of instruments, machines, tools, parts, or other equipment used for a particular purpose
  2. a machine having a specific function
  3. the means by which something operates; organization
  4. any group of organs having a specific function
Apparatus (noun) Definition, Meaning & Examples

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