from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of or pertaining to precession

from the GNU version of the Collaborative International Dictionary of English

  • adj. Of or pertaining to pression.

from The Century Dictionary and Cyclopedia

  • 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.


Sorry, no etymologies found.


  • 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.

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  • When these blades rotate they create large gyroscopic forces sometimes called precessional forces.

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  • In his Galactic Alignment theory, John Major Jenkins describes the coming 2012 event as the "precessional convergence of Milky Way and solstice sun."

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  • The climate change in this period is generally believed to be associated with precessional changes in the distribution of solar radiation, which primarily affect land-sea temperature contrast, and give only a regional warming, plus an enhancement of certain monsoonal circulations.

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  • Laskar, J., "Orbital, precessional, and insolation quantities for the Earth from -20 MYR to +10 MYR"; Astron.

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  • The interglacial thus lasts an additional precessional cycle, yielding a total duration of 28 kyr.

    Inconvenient Graphic « Climate Audit

  • Consider how long it took Milankovitch to calculate variation of insolation every year for 600,000 years for every 5° of latitude due to orbit, tilt and precessional changes.

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  • I thought of the great precessional cycle that the pole of the earth describes.

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  • Instead of discarding his value as too slow and accept - ing their own more rapid rate of 1° in 66 years as constant, some of them revived an ancient notion that the precessional speed swung back and forth between

    Dictionary of the History of Ideas

  • The fact of the precessional motion, already known to the



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