adjective Aerospace.
of, pertaining to, or being an activity performed by an astronaut outside a space vehicle while in orbit: an extravehicular activity.

1960–65; extra- + vehicular

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World English Dictionary
extravehicular (ˌɛkstrəvɪˈhɪkjʊlə)
occurring or used outside a spacecraft, either in space or on the surface of the moon or another planet: extravehicular activity

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