What is the definition of extraterrestrial?

Answer 1

"Extra" = 'outside of' or 'beyond'

"Terrestrial" = an adjective referring to Earth

"Extraterrestrial" = adjective saying that the thing is outside of Earth

Examples:

-- 'extraterrestrial rock' is a rock that is, or came from, outside of Earth

-- 'extraterrestrial macaroni' is macaroni that is, or came from, outside of earth

Everybody uses 'extraterrestrial' to mean alien people that live on other planets

and fly their spaceships to Earth to steal our women and our beer. But to be

grammatical about it, there's no such thing as "an extraterrestrial", any more

than there can be "a long", "a blue", or "a slow". The word is an adjective, so

it has to be an extraterrestrial something. This is still our planet, darn it, and

when they're here, they'd better use our language rightly.