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astrobiology

[as-troh-bahy-ol-uh-jee]
noun
  1. (not in technical use) exobiology.
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Origin of astrobiology

First recorded in 1950–55; astro- + biology
Related formsas·tro·bi·o·log·i·cal [as-troh-bi-uh-loj-i-kuh l] /ˌæs troʊˌbɪ əˈlɒdʒ ɪ kəl/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for astrobiology

astrobiology

noun
  1. the branch of biology that investigates the possibility of life elsewhere in the universe
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for astrobiology

n.

1903, from French astrobiologie; see astro- + biology. Related: Astrobiological; astrobiologist.

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Online Etymology Dictionary, © 2010 Douglas Harper

astrobiology in Science

astrobiology

[ăs′trō-bī-ŏlə-jē]
  1. See exobiology.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.