[ek-soh-bahy-ol-uh-jee] /ˌɛk soʊ baɪˈɒl ə dʒi/

the study of life beyond the earth’s atmosphere, as on other planets.
another name for astrobiology
The branch of biology that deals with the search for extraterrestrial life and the effects of extraterrestrial surroundings on living organisms. Also called astrobiology.


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  • Exobiota

    [ek-soh-bahy-oh-tuh] /ˌɛk soʊ baɪˈoʊ tə/ noun 1. extraterrestrial life.

  • Exocardia

    exocardia ex·o·car·di·a (ěk’sō-kär’dē-ə) n. See ectocardia.

  • Exocarp

    [ek-soh-kahrp] /ˈɛk soʊˌkɑrp/ noun, Botany. 1. . /ˈɛksəʊˌkɑːp/ noun 1. another name for epicarp exocarp (ěk’sō-kärp’) The outermost layer of the pericarp. In a fleshy drupe such as a peach, the skin constitutes the exocarp. Also called epicarp. Compare endocarp, mesocarp.

  • Exocentric

    [ek-soh-sen-trik] /ˌɛk soʊˈsɛn trɪk/ adjective, Grammar. 1. not having the same syntactic function in the sentence as any one of its immediate constituents. In the garden is an exocentric construction, since it does not function in the same way as the noun garden. The noun bittersweet is an exocentric compound, since it is a noun […]

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