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astrogeology
astrogeophysics
astrol.
astrolabe
astrology
astrometry
astron.
astronaut
astronautics
astronavigation
astronomical
astronomical clock
astronomical telescope
astronomical twilight
astronomical unit
astronomical year
astronomy
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astrobiology
as·tro·bi·ol·o·gy [ àstrō bī ólləjee ]


noun 
Definition:
 

Same as  exobiology

as·tro·bi·o·log·i·cal [ àstrō bī ə lójjik'l ] adjective
as·tro·bi·ol·o·gist noun
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