Third /(thẽrd)/

Third

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

Phrases & Compounds
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.

Third

n.
  1. The quotient of a unit divided by three; one of three equal parts into which anything is divided.
  2. The sixtieth part of a second of time.
  3. The third tone of the scale; the mediant. (Mus.)
  4. 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)

Phrases & Compounds
Major third
an interval of two tones.
Minor third
an interval of a tone and a half.