Definition of third

• a. - Next after the second; coming after two others; -- the ordinal of three; as, the third hour in the day.
• a. - Constituting or being one of three equal parts into which anything is divided; as, the third part of a day.
• n. - The quotient of a unit divided by three; one of three equal parts into which anything is divided.
• n. - The sixtieth part of a second of time.
• n. - The third tone of the scale; the mediant.
• n. - The third part of the estate of a deceased husband, which, by some local laws, the widow is entitled to enjoy during her life.