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Dictionary

ex•o•bi•ol•o•gy

Pronunciation: (ek"sō-bī-ol'u-jē), [key]
—n.
the study of life beyond the earth's atmosphere, as on other planets. Also called astrobiology, space biology.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

exo-

exobiota

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