D defs.my
Entry 1 sense Webster, 1913

Aëronautics

· A·ër·o·naut·ics · IPA
01 n. The science or art of ascending and sailing in the air, as by means of a balloon; aërial navigation; ballooning.
  1. 1.
    The science or art of ascending and sailing in the air, as by means of a balloon; aërial navigation; ballooning.