groundwave
/ˈɡraʊndweɪv/Definitions
1. noun
A type of electromagnetic wave that travels along the surface of the Earth.
“The radio communication system uses both groundwaves and skywaves to ensure reliable transmission.”
2. noun
A type of seismic wave that travels through the Earth’s surface, often associated with earthquakes.
“The geologists studied the groundwaves generated by the earthquake to understand its impact on the surrounding area.”