Literally, it means "having to do with sailing through the air".
"Aeronautical" means "of or pertaining to air travel or airplanes" - for example, aeronautical design is the design of airplanes.
Ryan Aeronautical was created in 1934.
Wright Aeronautical was created in 1919.
Spectrum Aeronautical was created in 1995.
aeronautical engineering institutes in Karachi
-- aeronautical mobile -- aeronautical radionavigation
aeronautical engineer
There are multiple companies with the acronym AIN. Assuming that you mean AINOnline, then one could say that it contributing to the aeronautical industry by reviewing aircrafts and reporting the latest updates about the industry in their magazine.
I dont know about Aeronautical Engineering but Aerospace Engineering it'd be Embry-Riddle Aeronautical University hands down. http://www.erau.edu/
Aeronautical College of Bangladesh was created in 2008.
College of Aeronautical Engineering was created in 1965.
Royal Aeronautical Society was created in 1866.