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Meaning of extravehicular

ex•tra•ve•hic•u•lar

Pronunciation: (ek"stru-vē-hik'yu-lur), [key]
— adj. Aerospace.
  1. of, pertaining to, or being an activity performed by an astronaut outside a space vehicle while in orbit: an extravehicular activity.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.