1. equipment or machinery designed for a particular purpose
2. a complex system or organization
Usage: often used for governmental or institutional systems

Examples

• The laboratory was equipped with expensive scientific apparatus.
• Firefighters used breathing apparatus to enter the smoke-filled building.
• The gymnast performed skillfully on the parallel bars apparatus.
• The government’s security apparatus monitored potential threats.
• Students learned to use the microscope and other laboratory apparatus.
• The diving apparatus allowed researchers to explore the ocean depths.
• The state apparatus includes various departments and agencies.