a. Obs. rare. [ad. L. vertent-, vertens, pres. pple. of vertĕre to turn, etc.] Vertent year, a cycle of the celestial bodies, containing 15,000 solar years.
After L. annuus vertens (Cicero, Rep., vi. 22, 24).
1635. Heywood, Hierarch., III. 147. This great and vertent yeare is, when we see All stars and planets brought to their first station After their much and long Peregrination. Ibid. (1636), Love’s Mistress, 2nd Prol. Who so un-read, doth not of Plato heare, His Annus Magnus, and his Vertent yeare?
