Taking place in or relating to the middle of a year.

(law, formal) An estate in land held under a lease which is not perpetual or indefinite in length, though in some cases may be contingent on some guaranteed occurrence.

Synonym of man-year

plural of person-year

plural of terawatt-year

(electricity) A unit of electrical energy equal to that done by one terawatt acting for one year.

gap year; sabbatical year

plural of half-year

(accounting) Synonym of fiscal year

The amount yielded by the annual income of property; used in expressing the value of a thing in the number of years required for its income to yield its purchase price, in computing the amount to be paid for annuities, etc.