Here are some examples of words with the root "aero":
* Aerodynamics: The study of how air moves around objects.
* Aerosol: A substance that is dispersed as a fine mist in the air.
* Aerobics: Exercise that uses oxygen to build muscle.
* Aerostat: A lighter-than-air aircraft, like a balloon.
* Aeronaut: A person who travels in an aerostat.
The root "aero" comes from the Greek word "aer," which also means "air."