Definition of "year"

A period of time akin to the time taken for the Earth to undergo the seasons.

1. The time taken for the Earth to return to the same position along the ecliptic, completing a full cycle of seasons; a tropical year or solar year.  examples

2. The time taken for the Earth to orbit the Sun with respect to the fixed stars; a sidereal year.  examples

3. The length of twelve lunations; a lunar year.  examples

4. The length of a year as marked by a calendar, 365 or 366 days in the Gregorian calendar; a calendar year or common year.  examples

5. The mean length of a calendar year in the Julian calendar, that is, 365.25 solar days; a Julian year.  examples

(by extension) The time it takes for any astronomical object (such as a planet, dwarf planet, small Solar System body, or comet) in direct orbit around a star (such as the Sun) to make one revolution around the star.  quotations  examples

A period between set dates that mark a year, such as from January 1 to December 31 by the Gregorian calendar, from Tishri 1 to Elul 29 by the Jewish calendar, and from Muharram 1 to Dhu al-Hijjah 29 or 30 by the Islamic calendar.  quotations  examples

A scheduled part of a calendar year spent in a specific activity.

1. A level or grade in school or college.  examples

The proportion of a creature's lifespan equivalent to one year of an average human lifespan (see also dog year).  examples

Pronunciation spelling of here.  examples

Pronunciation spelling of hear.  examples