noun / verb / adjective
base
BAYSS/beɪs/
A foundation or main support from which something operates.
The lamp's broad base supports its upright stem and shade.

Etymology
Greek basis named a step or something on which one stands. That image of a supporting surface connects directly to a base as the bottom or foundation supporting something.
In context
part is consists of weak rocks and these are the hardening strong rocks. So here the pediment characteristics will be different how? Pediments that form on weak-rock lowlands at the base of the mountain
More examples
- We base our conclusions on repeated observations.
- The cabin serves as a base for mountain excursions.
- The recipe starts with a simple base sauce.
Forms
base · bases · based · basing
Similar words
- foundation
- Emphasizes underlying support rather than a center of operations.
- headquarters
- Specifically names the main location directing an organization's activities.