Platonic year

a period of about 26,000 years, equal to the time required for a complete revolution of the equinoxes. Also called great year. Cf. precession of the equinoxes.
[1630-40]

* * *


Universalium. 2010.

Look at other dictionaries:

  • Platonic year — Year Year, n. [OE. yer, yeer, [yogh]er, AS. ge[ a]r; akin to OFries. i?r, g?r, D. jaar, OHG. j[=a]r, G. jahr, Icel. [=a]r, Dan. aar, Sw. [*a]r, Goth. j?r, Gr. ? a season of the year, springtime, a part of the day, an hour, ? a year, Zend y[=a]re… …   The Collaborative International Dictionary of English

  • Platonic year — Platonic Pla*ton ic, Platonical Pla*ton ic*al, a. [L. Platonicus, Gr. ?: cf. F. platonique.] 1. Of or pertaining to Plato, or his philosophy, school, or opinions. [1913 Webster] 2. Pure, passionless; nonsexual; philosophical. [1913 Webster]… …   The Collaborative International Dictionary of English

  • Platonic year — n. GREAT YEAR …   English World dictionary

  • Platonic year — noun time required for one complete cycle of the precession of the equinoxes, about 25,800 years • Syn: ↑great year • Hypernyms: ↑time period, ↑period of time, ↑period * * * Astron. a period of about 26,000 years, equal to the time required for a …   Useful english dictionary

  • Platonic year —    a unit of time used in astronomy. The earth s axis of rotation is not fixed in space; the attraction of the moon causes it to slowly trace out a circle in the sky. This motion, called precession, changes the orientation of the sky as seen from …   Dictionary of units of measurement

  • PLATONIC YEAR —    a period of 26,000 years, denoting the time of a complete revolution of the equinox …   The Nuttall Encyclopaedia

  • Year — Year, n. [OE. yer, yeer, [yogh]er, AS. ge[ a]r; akin to OFries. i?r, g?r, D. jaar, OHG. j[=a]r, G. jahr, Icel. [=a]r, Dan. aar, Sw. [*a]r, Goth. j?r, Gr. ? a season of the year, springtime, a part of the day, an hour, ? a year, Zend y[=a]re year …   The Collaborative International Dictionary of English

  • Year and a day — Year Year, n. [OE. yer, yeer, [yogh]er, AS. ge[ a]r; akin to OFries. i?r, g?r, D. jaar, OHG. j[=a]r, G. jahr, Icel. [=a]r, Dan. aar, Sw. [*a]r, Goth. j?r, Gr. ? a season of the year, springtime, a part of the day, an hour, ? a year, Zend y[=a]re… …   The Collaborative International Dictionary of English

  • Year of grace — Year Year, n. [OE. yer, yeer, [yogh]er, AS. ge[ a]r; akin to OFries. i?r, g?r, D. jaar, OHG. j[=a]r, G. jahr, Icel. [=a]r, Dan. aar, Sw. [*a]r, Goth. j?r, Gr. ? a season of the year, springtime, a part of the day, an hour, ? a year, Zend y[=a]re… …   The Collaborative International Dictionary of English

  • Platonic — Pla*ton ic, Platonical Pla*ton ic*al, a. [L. Platonicus, Gr. ?: cf. F. platonique.] 1. Of or pertaining to Plato, or his philosophy, school, or opinions. [1913 Webster] 2. Pure, passionless; nonsexual; philosophical. [1913 Webster] {Platonic… …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.