mysterialis

mystēriālis, e (mysterium), geheimnisvoll, mysteriös, interior et m. sensus, Interpr. Orig. in Matth. 23: mysterialius templum, ibid. 31.

mysterialis [LL] , mysterious, that is hidden or cannot be explained by reason; b (dist. from materialis). c1150 semita per speculum mysteriale patet Anecd. Poet. 9. 10.  b s1455 in flammam ‥ adeo grandem, ut nec rore, nec latice ‥ nec aliqua aquea specie altera, sive materiali, sive misteriali, aliter extingui poterat Reg. Whet. I 160.

mystērĭālis, e, mystique, mystérieux : Orig. Matth. 23 ; 31.