waveguide

noun

wave·​guide ˈwāv-ˌgīd 

: a device (such as a duct, coaxial cable, or glass fiber) designed to confine and direct the propagation of electromagnetic waves (such as light)

especially : a metal tube for channeling ultrahigh-frequency waves

Examples of waveguide in a Sentence

Recent Examples on the Web

The Meta Ray-Ban Display's color waveguide still feels like an important evolution in the category, even if it's held back by limited features and questionable design decisions. — Will Greenwald, PC Magazine, 28 Sep. 2026

The water jet acts as a liquid optical waveguide because of the refractive-index difference between the water core and the gas cladding. — Mrigakshi Dixit, Interesting Engineering, 7 Sep. 2026

The researchers then wrote two identical fiber Bragg gratings into the waveguide, forming a tiny optical cavity between them. — Pawel Maniewski, New Atlas, 2 Sep. 2026

Word History

First Known Use

1932, in the meaning defined above

Rhymes for waveguide

• actinide
• aldehyde
• alkoxide
• alongside
• amplified
• arsenide
• beautified
• biocide
• bisulphide
• butoxide
• calcified
• ceramide

Medical Definition

waveguide

noun

wave·​guide ˈwāv-ˌgīd 

: a device (as a glass fiber) designed to confine and direct the propagation of electromagnetic waves (as light)

use of waveguides for visual examination of the stomach