1. a structure that guides electromagnetic waves along a path
Usage: technical; physics

Examples

• The radar system uses a rectangular waveguide to transmit signals.
• Optical fibers act as waveguides for light waves.
• The microwave oven contains a waveguide that directs energy to the food compartment.
• Engineers designed a new waveguide for the satellite communication system.
• The waveguide must be properly shielded to prevent signal loss.
• Coaxial cables are a common type of waveguide used in electronics.