from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, relating to, or being water that is located in the zone of aeration in the earth's crust above the ground water level.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or pertaining to water beneath the surface of the earth which is located above the level of the permanent groundwater.
from The Century Dictionary and Cyclopedia
- Shallow: specifically applied to those ground waters which seep into rocks and soil from the surface, as opposed to the construction waters which were built into the rocks at the time of their formation.
Latin vadōsus, shallow, from vadum, a shallow, ford.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin vadosus. (Wiktionary)