We found 2 dictionaries that define the word exterrestrial:

General (2 matching dictionaries)

1. exterrestrial: Merriam-Webster
2. exterrestrial: Wiktionary

Definitions from Wiktionary (exterrestrial) ▸ adjective:  Synonym of extraterrestrial ▸ Words similar to exterrestrial ▸ Usage examples for exterrestrial ▸ Idioms related to exterrestrial ▸ Wikipedia articles (New!) ▸ Popular nouns described by exterrestrial ▸ Words that often appear near exterrestrial ▸ Rhymes of exterrestrial ▸ Invented words related to exterrestrial