deduce

verb

1. (transitive)To reach (a conclusion) by applying rules of logic or other forms of reasoning to given premises or known facts.

   “[T]he puritan buyldeth directly vpon the proteſtants firſt groundes in religion, & deduceth therof clearly and by ordinary conſequence al his concluſions, which the proteſtant cannot deny by divinity, but only by pollicy & humane ordination, or by turning to catholique anſwers contrary to ther owne principles: […]”

   “[T]hoſe principles or firſt poſitions, have no diſcordance with that reaſon, which draweth downe and diduceth the inferiour poſitions.”

   “Laſtly, One way more there may be of miſtake, at that not unuſuall among us, grounded upon a double compute of the year; the one beginning from the 25 of March, the other from the day of our birth unto the ſame again, which is the naturall account. Now hereupon many men frequently miſcaſt their daies; for in their age they diduce the account not from the day of their birth, but the year of our Lord, wherein they were born.”

   “Counsell, is where a man ſaith, Doe, or Doe not this, and deduceth his reaſons from the benefit that arriveth by it to him to whom he ſaith it. And from this it is evident, that he that giveth Counſell, pretendeth onely (whatſoever he intendeth) the good of him, to whom he giveth it.”

   “From the comparative weight or lightneſs of the Air at different times, he deduceth alſo the riſing and falling of Vapours in it.”

2. (transitive, uncommon)To examine, explain, or record (something) in an orderly manner.

   “Pye[d-mantle]. […] Sir, I haue drawne / A Pedigree for her Grace, though yet a Nouice / In that ſo noble ſtudy. […] I haue deduc'd her.— […]”

   “It ſeems there is ſome angry Star that hath hung over this Buſineſs of the Palatinate from the beginning of theſe German Wars to this very Day, which will too evidently appear, if one ſhould mark and deduce Matters from their firſt Riſe.”

   “Lend me your ſong, ye nightingales! oh pour / The mazy-running ſoul of melody / Into my varied verſe! while I deduce, / From the firſt note the hollow cuckoo ſings, / The ſymphony of Spring, and touch a theme / Unknown to fame, the Paſſion of the groves.”

   “The general deſign of this work will not permit us minutely to relate the actions of every emperor after he aſcended the throne, much leſs deduce the various fortunes of his private life.”

   “If you leave this Isle, and got to the court of England, see what regard there will be paid to the old pedigree that deduces your descent from kings and conquerors.”

3. (archaic, transitive)To obtain (something) from some source; to derive.

   “O Goddeſs, ſay, ſhall I deduce my rhimes / From the dire nation in its early times, / Europa’s rape, Agenor’s ſtern decree, / And Cadmus ſearching round the ſpacious ſea?”

   “The Spring whence thou [Hugh Myddelton] deduced'st the ample stream, / The Poet's and Historian's theme, / Trenching thy mighty aqueduct a way, / 'Till as the humble plains, the aspiring hills obey.”

   “Do not, my children, O do not accustom yourselves to such warfares, / Nor on your country's vitals thus turn your invincible valor: / Sooner refrain thou, thou who deducest thy race from Olympus!”

4. (archaic, intransitive)To be derived or obtained from some source.

   “[B]y the ſtatute 7 Ann. c. 21 […] it is enacted, that, after the death of the pretender, and his ſons, no attainder for treaſon ſhall extend to the diſinheriting any heir, nor the prejudice of any perſon, other than the offender himſelf: which proviſions have indeed carried the remedy farther, than was required by the hardſhip above complained of; which is only the future obſtruction of deſcents, where the pedigree happens to be deduced through the blood of an attainted anceſtor.”

5. (obsolete, transitive)To take away (something); to deduct, to subtract (something).

   “to deduce a part from the whole”

   “Pra[ctise]. […] Well, Sir, the Contract / Is with this Gentleman, ten thouſand pound. […] Int[erest]. And what I have furniſh'd him with all o' the by, / To appeare, or ſo: A matter of foure hundred, / To be deduc'd upo' the payment—.”

6. (obsolete, transitive)To lead (something) forth.

   “Richard of the Vies will that Penda, K[ing] of Mereland, firſt deduced a colony of Cambridge men hither and cals it Crekelade, as other Kirklade with variety of names: […]”