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adj. Of or pertaining to precession

adj. Of or pertaining to pression.

Pertaining to or resulting from the precession of the equinoxes: as, precessional force.

Of or pertaining to the phenomenon of precession in general. See precession, 4.

"Thus astronomers must have made great progress in their science before they could select as a day for counting from, the epoch when the slow reeling motion of the earth (the so-called precessional motion) brought the Pleiades centrally south, at noon, at the time of the vernal equinox."

headache-inducing    hydrological    hydrologic    work/rest    now-vanished