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astronautical

or astronautic

[as-truh-naw-ti-kuh l, -not-i-] /ˌæs trəˈnɔ tɪ kəl, -ˈnɒt ɪ-/
adjective
1.
of or relating to astronautics or astronauts.
Origin of astronautical
astronautic (< French astronautique, equivalent to astronaute (astro- astro- + -naute < Greek naútēs sailor, on the model of aéronaute aeronaut) + -ique -ic) + -al1
Related forms
astronautically, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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