Source : Webster's Revised Unabridged Dictionary (1913)

Aeronautic \A`["e]r*o*naut"ic\, Aeronautical
\A`["e]r*o*naut"ic*al\, a. [Cf. F. a['e]ronauitique.]
   Pertaining to a["e]ronautics, or a["e]rial sailing.

Source : WordNet®

aeronautical
     adj : of or pertaining to aeronautics [syn: {aeronautic}]