[ek-struh-tuh-res-tree-uh
l] 
| 1. | outside, or originating outside, the limits of the earth. |
| 2. | an extraterrestrial being: a science fiction novel about extraterrestrials conquering the earth. |
| ex·tra·ter·res·tri·al (ěk'strə-tə-rěs'trē-əl) adj. Originating, located, or occurring outside Earth or its atmosphere: intelligent extraterrestrial life. n. An extraterrestrial being or life form. |
A descriptive term for things outside the Earth, such as possible civilizations outside the solar system, or objects, such as meteorites, that actually reach the Earth.
