from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The scientific study of the possible origin, distribution, evolution, and future of life in the universe, including that on Earth, using a combination of methods from biology, chemistry, and astronomy.

from the GNU version of the Collaborative International Dictionary of English.

  • noun exobiology; -- not used technically.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the branch of biology concerned with the effects of outer space on living organisms and the search for extraterrestrial life


from Wiktionary, Creative Commons Attribution/Share-Alike License

astro- +‎ biology


Help support Wordnik (and make this page ad-free) by adopting the word astrobiology.



Log in or sign up to get involved in the conversation. It's quick and easy.