v. t.
To undersell our rivals . . . has led the manufacturer to . . . attenuate his processes, in the allotment of tasks, to an extreme point. I. Taylor. [ 1913 Webster ]
We may reject and reject till we attenuate history into sapless meagerness. Sir F. Palgrave. [ 1913 Webster ]
v. i. To become thin, slender, or fine; to grow less; to lessen. [ 1913 Webster ]
The attention attenuates as its sphere contracts. Coleridge. [ 1913 Webster ]
n. [ L. attenuatio: cf. F. atténuation. ]