1. (n.) The time of the apparent revolution of the sun trough the ecliptic; the period occupied by the earth in making its revolution around the sun, called the astronomical year; also, a period more or less nearly agreeing with this, adopted by various nations as a measure of time, and called the civil year; as, the common lunar year of 354 days, still in use among the Mohammedans; the year of 360 days, etc. In common usage, the year consists of 365 days, and every fourth year (called bissextile, or leap year) of 366 days, a day being added to February on that year, on account of the excess above 365 days (see Bissextile).

2. (n.) The time in which any planet completes a revolution about the sun; as, the year of Jupiter or of Saturn.

3. (n.) Age, or old age; as, a man in years.

abundant year academic year annum bissextile year calendar month calendar year century common year day decade decennary decennium defective year fiscal year fortnight hour leap year lunar month lunar year lunation luster lustrum man-hour microsecond millennium millisecond minute moment month moon quarter quinquennium regular year second semester session sidereal year solar year sun term trimester twelvemonth week weekday