| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Belt of phreatic fluctuation | Geography | A part of the lithosphere which, because of the fluctuation of the water table, lies a part of the time in the zone of saturation and a part of the time in the overlying zone of aeration. Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
