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| (used as a nonsense word by children to express approval or to represent the longest word in English.) |
| given to using long words. |
| astrobiology (ās'trō-bī-ŏl'ə-jē) Pronunciation Key
See exobiology. |
astrobiology
a multidisciplinary field dealing with the nature, existence, and search for extraterrestrial life (life beyond Earth). Astrobiology encompasses areas of biology, astronomy, and geology.
Learn more about astrobiology with a free trial on Britannica.com.