Define magnet.

A magnet is an object that produces a magnetic field and attracts certain materials such as iron, nickel, and cobalt. Magnets have two poles, north and south, and like poles repel each other while opposite poles attract each other.

A magnet is a material or object that produces a magnetic field. This magnetic field is invisible, but it can be detected by its effects on other magnets or magnetic materials. Magnets can be either permanent or temporary. Permanent magnets are made from materials that retain their magnetic properties even after they are removed from a magnetic field. Temporary magnets are made from materials that only become magnetic when they are placed in a magnetic field.