a. Obs. rare1. [f. L. quotann-is every year + -AL.] Yearly, annual.
1651. Biggs, New Disp., 170. A quotannal recidivation.
So Quotannual a. (after annual). Obs.
1658. J. Robinson, Eudoxa, x. 55. There would be a fear of
a quotannuall Phaetontick combustion.