1. A quadrat.

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

• lquid,
• queda,
• gurad,
• suad,
• quade,
• qued,
• quale,
• quali,
• queada,
• cuald,
• squard,
• queed,
• quoat,
• quted,
• guady,
• guad,
• quala,
• quial,
• qual,
• quarn

• quit,
• quid,
• quota,
• quaid,
• Quat,
• Quade.

The adjective form of the word "quad" is "quadratic".

The plural of the "quad" can be the "quads".

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