Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Located or occurring on or near the surface of the earth.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Located or occurring at the Earth's surface, especially on land

from the GNU version of the Collaborative International Dictionary of English

  • adj. Beneath the sky; in the open air; specifically (Geol.), taking place on the earth's surface, as opposed to subaqueous.

from The Century Dictionary and Cyclopedia

  • In geology, formed, produced, or deposited in the open air, and not beneath the sea, or under water, or below the surface; not submarine or subterranean: thus, subaërial denudation or erosion: See æolian, 2.

Etymologies

Literally under the air (Wiktionary)

Examples

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