Etymology
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astrobiology (n.)

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

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Definitions of astrobiology

astrobiology (n.)
the branch of biology concerned with the effects of outer space on living organisms and the search for extraterrestrial life;
Synonyms: exobiology / space biology
From wordnet.princeton.edu