* Aerobic: Relating to or requiring oxygen.
* Aerodynamics: The study of how air moves around objects.
* Aerosol: A suspension of fine solid particles or liquid droplets in air.
* Aeroplane: A fixed-wing aircraft.
* Aerostat: A lighter-than-air aircraft, such as a balloon or blimp.
* Aerospace: The space above the Earth's atmosphere.
* Aeronaut: A person who operates an aerostat.
* Aerogram: A lightweight letter that can be sent by airmail.
* Aerobatics: The performance of stunts in an aircraft.
* Aerogel: A very lightweight, porous material.
* Aerology: The study of the Earth's atmosphere.
Let me know if you'd like more examples!