space helmet

1. 1.

   a helmet worn by astronauts while in outer space

   Broaderhelmet

Questions about space helmet

What does space helmet mean?

space helmet means "a helmet worn by astronauts while in outer space".

Is space helmet a common word?

space helmet is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.