Definitions

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

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

astro- +‎ biology

Examples

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