extraterrestrial meaning

extraterrestrial as an adjective

1. originating or located or occurring outside Earth or its atmosphere
   • is there extraterrestrial life?

   Related forms: Earth

extraterrestrial as a noun

1. a form of life assumed to exist outside the Earth or its atmosphere

   Synonyms: extraterrestrial being, alien

   Type of: hypothetical creature

extraterrestrial in a sentence

• He claims he speaks an extraterrestrial language.
• Dawn is the only mission ever to orbit two extraterrestrial targets.
• I've heard that they've found an extraterrestrial object on the moon.
• What would you do if you met an extraterrestrial?
• This extraterrestrial tree is blue.

How to pronounce extraterrestrial

extraterrestrial is pronounced /ˌɛkstrətəˈrɛstriəl/ in American English. It has 6 syllables, with the stress on the fourth syllable.