Definition

1. Adjective:

   • Originating, located, or occurring outside Earth or its atmosphere: Describes something that comes from, exists in, or happens in a place beyond the planet Earth.

2. Noun:

   • A form of life assumed to exist outside the Earth or its atmosphere: A hypothetical being or creature from another world.

Usage Examples

• Adjective:

  • Scientists are searching for extraterrestrial signals from distant stars.
  • The movie is about an extraterrestrial object that crashes in the desert.

• Noun:

  • Many people claim to have seen an extraterrestrial.
  • The story features a friendly extraterrestrial who wants to learn about human culture.

Advanced Usage

• "Extraterrestrial intelligence (ETI)": The hypothetical intellectual capacity of beings from other worlds.

  • The search for extraterrestrial intelligence is a major goal of some astronomy projects.

• "Extraterrestrial origin": Describing something as coming from beyond Earth.

  • The meteorite's composition suggested an extraterrestrial origin.

Variants and Related Words

• Extraterrestrially (adverb): In an extraterrestrial manner; from or in outer space.
  • The material was believed to have arrived extraterrestrially.

Synonyms

• Alien (adj/noun): Belonging to a foreign country or world; a being from another world.
• Otherworldly (adj): Of or relating to an imaginary or spiritual world.

Related Phrases

• "Extraterrestrial life": Life that does not originate from Earth.

  • The discovery of water on Mars renewed hopes of finding extraterrestrial life.

• "Extraterrestrial object": Any physical item, like a meteoroid or spacecraft, that comes from space.

  • The museum displayed the extraterrestrial object found at the impact site.

Adjective

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

Noun

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