base level

And, where those cannot be achieved, at least a base-level opposition to tyranny, reaction, religious fundamentalism, and so on.

Such regions of faint relief, worn down to near base level by subaërial agencies, are known as peneplains (almost plains).

The small loop end will stick out below the spiral and prevent it standing on a base level.

The top and base level of each piece of wall had to be marked on it; and the levels could then be measured off to fixed points.

No definite degree of slope can be fixed upon as marking a base-level.

A peneplain, therefore, is a surface which has been brought toward, but not to base-level.