a. Astr. [f. L. apogē-us, a. Gr. ἀπόγαιος -γειος (see prec.) + -AL.] = APOGEAN.
1743. Phil. Trans., XLVIII. 166. The difference between the apogeal and perigeal diameters of the sun.
1797. Encycl. Brit., II. 584/1. Set the moon’s apogeal wire to its place in the ecliptic for that time.
