Third /(thẽrd)/

Third

Next after the second; coming after two others; -- the ordinal of three; as, the third hour in the day.
Constituting or being one of three equal parts into which anything is divided; as, the third part of a day.

Third estate: In England, the commons, or the commonalty, who are represented in Parliament by the House of Commons.
Third order: an order attached to a monastic order, and comprising men and women devoted to a rule of pious living, called the third rule, by a simple vow if they remain seculars, and by more solemn vows if they become regulars. See Tertiary, n., 1.
Third person: the person spoken of. See Person, n., 7.
Third sound: See Third, n., 3.

The quotient of a unit divided by three; one of three equal parts into which anything is divided.
The sixtieth part of a second of time.
The third tone of the scale; the mediant. (Mus.)
The third part of the estate of a deceased husband, which, by some local laws, the widow is entitled to enjoy during her life. (Law)