1. relating to or existing on the earth or land rather than in water or air
2. relating to television or radio signals broadcast from earth-based transmitters rather than satellites
Usage: technical

1. a being from the planet Earth, especially as distinguished from extraterrestrial life
Usage: often in science fiction contexts

Examples

• Most mammals are terrestrial animals that live on land.
• The astronauts studied both terrestrial and lunar rock samples.
• We lost the terrestrial TV signal during the storm.
• The movie featured a conflict between terrestrials and aliens.
• Terrestrial plants have adapted to life without constant moisture.
• The satellite provided better coverage than terrestrial broadcasting.
• Scientists search for signs of both terrestrial and extraterrestrial life.