2. To make thin or less consistent; to render less viscid or
dense; to rarefy. Specifically: To subtilize, as the
humors of the body, or to break them into finer parts.
3. To lessen the amount, force, or value of; to make less
complex; to weaken.
To undersell our rivals . . . has led the
manufacturer to . . . attenuate his processes, in
the allotment of tasks, to an extreme point. --I.
Taylor.
We may reject and reject till we attenuate history
into sapless meagerness. --Sir F.
Palgrave.