as ‧ tro ‧ naut /ˈæstrənɔːt $ -nɒːt, -nɑːt/ BrE AmE noun [countable]
[ Date: 1900-2000 ; Origin: astro- + -naut (as in aeronaut ; ⇨ ↑ aeronautics ) ]
someone who travels and works in a spacecraft
as ‧ tro ‧ naut /ˈæstrənɔːt $ -nɒːt, -nɑːt/ BrE AmE noun [countable]
[ Date: 1900-2000 ; Origin: astro- + -naut (as in aeronaut ; ⇨ ↑ aeronautics ) ]
someone who travels and works in a spacecraft
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012