Definition of "exobiologist" [exobiologist]

• A biologist whose speciality is exobiology (noun)

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• "Day takes a fictional look at a wide-ranging Japanese exobiologist...in space."
• "Dr. Grace Augustine (Sigourney Weaver), in the movie Avatar (2009), is an exobiologist and she runs the Avatar Program on Pandora."
• "Yesterday was the 10th anniversary of the passing of the great astronomer/exobiologist/science popularizer Carl Sagan, and there's a world-wide blog-a-thon to celebrate."