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

(obsolete) Yacht.

(archaic) Pertaining to or indicative of one who says yea and forsooth; not belonging to genteel society.

plural of New Year's resolution

(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.

(informal, slang, Canada, US) an exclamation of excitement or joy

plural of year-group

(medicine, smoking) A unit for measuring the number of cigarettes a person has smoked previously; it is calculated by multiplying the average number of packs of cigarettes the person smokes per day by the number of years the person has smoked.

An informal competition among birdwatchers to determine who can see or hear the largest number of species of birds within a single calendar year and within a specific geographical area.

A year that does not contain the day February 29.