spacesuit spacesuit /ˈspeɪˌsuːt/

noun

1. A pressure suit worn by astronauts while in outer space  ( spacesuit )
   a pressure suit worn by astronauts while in outer space
    Astronauts wear a spacesuit to protect themselves in the harsh environment of space.
   Astronauts wear a spacesuit to protect themselves in the harsh environment of space.