- disquisition (n.)
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- c. 1600, "subject for investigation," also "systematic search," from Latin disquisitionem (nominative disquisitio) "an inquiry, investigation," noun of action from past participle stem of disquirere "inquire," from dis- "apart" (see dis-) + quaerere "seek, ask" (see query (v.)). Sense of "long speech" first recorded 1640s.