There are 7 12-letter words that start with 'aer'.
| aerobicizing | aerodynamics | aeroembolism |
| aeromagnetic | aeromedicine | aeronautical |
| aerosolizing | ||
Note: These 7 12-letter words that start with 'aer' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with aero, aeri, aera, aere, aeru, aery.
4-letter words start with 'aer' (2)