411 REFERENCE · Wiktionary
Great Year
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
Great Year
en astronomy historical One complete precession of the equinox, approximately 25,765 years.
en Platonic year
en astronomy historical Any real or imagined cycle with astronomical or astrological significance.
Hyponyms
en Sothic period