sciential

Latin scientia (“knowledge”) + suffix -al.

sciential (comparative more sciential, superlative most sciential)

1. Of or pertaining to science or to knowledge.
   • 1667, John Milton, “Book VIII”, in Paradise Lost. […], London: […] [Samuel Simmons], […], OCLC 228722708; republished as Paradise Lost in Ten Books: […], London: Basil Montagu Pickering […], 1873, OCLC 230729554:

     But first low Reverence don, as to the power
     That dwelt within, whose presence had infus’d
     Into the plant sciential sap

   • 1826, Samuel Taylor Coleridge, Aids to Reflection, "On Instinct in Connection with the Understanding (in Comment on Aphorism IX)":

     One of the wisest of uninspired men has not hesitated to declare the dog a great mystery, on account of this dawning of a moral nature unaccompanied by any the least evidence of reason, in whichever of the two senses we interpret the word—whether as the practical reason, that is, the power of proposing an ultimate end, the determinability of the Will by ideas; or as the sciential reason, that is, the faculty of concluding universal and necessary truths from particular and contingent appearances.

2. Knowledgable.

• Catilines, elasticin, inelastic