A terrestrial planet is a rocky planet similar to Earth, with a solid surface and typically a thin atmosphere.
A terrestrial planet is one that, like Earth, has a solid surface as well as a dense core.(The antonym is gas giant planet.)A planet designated as a terrestrial planet may not actually have conditions favorable to lifeforms found on Earth.
There was no gravity on that planet.
It was a earthly planet
planetary has a root word and it is planet
The bolide crashed into the planet, resulting in a crater.
We need to use solar powered lights so we don't damage our planet
ya face ya know
Man has conquered the planet through his domestication of plants and animals.
Planet Earth is where I live.
I think of the word terrestrial as referring specifically to the earth. But in the context of your question I think you are referring to a rocky planet as opposed to a gas giant. Venus is a rocky planet, or terrestrial to use your term. There are 4 rocky planets: Mercury, Venus, Earth and Mars. Don't let the water on the Earth confuse you with the term rocky. The water is extremely shallow in astronomical dimensions. The gas planets, often called gas giants, are Jupiter, Saturn, Uranus, and Neptune. Pluto is no longer considered a planet and I do not know which category it would fall into.
The environmental movement aims to promote sustainability and protect the planet for future generations.