plural of accounting year

(historical) A period during the Cold War, characterized by left-wing and right-wing terrorism and the strategy of tension, beginning in Italy and later spreading to the rest of Europe.

The year adopted by any nation for the computation of time.

(idiomatic) Old age.

(education) The annual period during which a student attends school, college or university.

(astronomy, historical) One complete precession of the equinox, approximately 25,765 years. / (astronomy, historical) Any real or imagined cycle with astronomical or astrological significance.

The time taken for the Earth to complete one revolution with respect to its apsides, usually defined as the time between perihelion passages.

(hydrology) The timespan between October 1 and September 30 of the next year, differing from the calendar year because part of the precipitation that falls in late autumn and winter accumulates as snow and does not drain until the following spring or summer.

plural of academic year

(literary) The later years of one's life, especially after one has finished one's career.