Directly derived from "terrestrial":
* Terrestrial: relating to the earth or its inhabitants; earthly.
* Terrestrially: in a way that relates to the earth.
* Terrestrialism: the theory that the earth is the only planet with life.
Words with related meanings:
* Extraterrestrial: originating or existing outside the earth; from another planet.
* Subterranean: existing or occurring below the earth's surface.
* Terraforming: the process of transforming a planet, moon, or other celestial body to be more Earth-like.
* Terracotta: a reddish-brown earthenware.
* Terrace: a level area with a raised edge, often found on a slope.
* Terrestrialization: the process of becoming terrestrial (e.g., adaptation of marine animals to land).
Note: The root "terra" also appears in many other words related to earth, land, and the ground. These include:
* Terrain: the physical features of an area of land.
* Terra firma: solid ground, as opposed to water or air.
* Terrace: a level area with a raised edge, often found on a slope.
* Territorial: relating to or concerning territory.
* Inter: to bury (a dead person).
This list isn't exhaustive, but it demonstrates the wide range of words derived from the Latin root "terrestrial."