aeronautical engineering aeronautical engineering /ˌɛroʊˈnɔːtɪkəl ˌɛndʒɪˈnɪrɪŋ/

noun

1. The activity of designing and constructing aircraft  ( aeronautical engineering )
   the activity of designing and constructing aircraft
   
2. The branch of engineering science concerned with the design and construction of aircraft  ( aeronautical engineering )
   the branch of engineering science concerned with the design and construction of aircraft