disquisitional

a. Pertaining to disquisition; of the nature of disquisition. [ 1913 Webster ]

n. [ L. disquisitio, fr. disquirere to inquire diligently, investigate; dis- + quaerere to seek. See Quest. ] A formal or systematic inquiry into, or discussion of, any subject; a full examination or investigation of a matter, with the arguments and facts bearing upon it; elaborate essay; dissertation. [ 1913 Webster ]

For accurate research or grave disquisition he was not well qualified. Macaulay. [ 1913 Webster ]