1. The third part of anything: the sixtieth part of a second of time; an interval containing three diatonic sounds and two degrees or intervals.

2. The first after the second; the ordinal of three.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• thierr,
• theiri,
• thsed,
• thirsd,
• thirdty,
• therd,
• thift,
• therad,
• thiird,
• thirdy,
• thife,
• theiry,
• thired,
• thirth,
• thrid,
• thrir,
• thihg,
• thudd,
• athird,
• thiat

• thready,
• Threet,
• throaty,
• thyroid,
• thereto,
• three-d,
• throat,
• theriot,
• thread,
• thorite,
• threatt,
• thirty,
• threat.

The adjective form of the word "third" is "third".

The plural of the "third" can be the "thirds".

The singular of the "third" can be the "third".