To lay out plans; to estimate the consequences of what one does, or of what happens.

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1825.  Let each man [figuratively] take a slate and cipher it out.—John Neal, ‘Brother Jonathan,’ i. 172.

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1837–40.  The constable was cyphering a good while how he should catch him.—Haliburton, ‘The Clockmaker,’ p. 18. (N.E.D.)

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1860.  Still Cyphering. The Examiner continues cyphering Mr. Hunter’s vote in Virginia.—Richmond Enquirer, April 12, p. 1/5.

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1862.  

        I ’ve made my ch’ice, an’ ciphered out, from all I see an’ heard,
Th’ old Constitooshun never ’d git her decks for action cleared.
Lowell, ‘Biglow Papers,’ 2nd Series, No. 3.    

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