aërian

from The Century Dictionary.

• noun A member of a reforming sect of the fourth century, so called, from their leader Aërius, a presbyter of Sebastia in Pontus, who separated from the church about a. d. 360.
• Aërial; of or belonging to the air; produced or existing in the atmosphere.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Alternative spelling of aerian.