a task or mission performed by an astronaut outside a spacecraft in space.

verb (used without object)

to execute such a task or mission.

Nearby words

  1. spaceport,
  2. spacer,
  3. spaceship,
  4. spaceshot,
  5. spacesuit,
  6. spacewoman,
  7. spacey,
  8. spacial,
  9. spacial formula,
  10. spaciality

Origin of spacewalk

An Americanism dating back to 1960–65; space + walk

Related formsspace·walk·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for spacewalk



the act or an instance of floating and manoeuvring in space, outside but attached by a lifeline to a spacecraftTechnical name: extravehicular activity


(intr) to float and manoeuvre in space while outside but attached to a spacecraft
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012