adv. Obs. rare. [f. QUADRANT a. + -LY2.] Squarely; in a square form. To multiply quadrantly, to square.
1538. Leland, Itin., III. 33. In the midle of the Toun is a House buildid quadrantly.
1581. Styward, Mart. Discipl., II. 108. An order to imbattell 12. C men quadrantlie at the sodaine.
1594. Blundevil, Exerc., I. xxvi. (1636), 62. You must multiply the said 4 in it selfe Quadrantly, which maketh 16.