Metal is a solid material that is typically hard, opaque, shiny, and malleable. Metals are good conductors of electricity and heat. Some common metals include iron, copper, aluminum, and gold.

In chemistry, a metal is an element that readily forms positive ions (cations) and has a low ionization energy. Metals are typically electropositive, meaning that they tend to lose electrons easily.

In metallurgy, a metal is a material that contains a majority of metallic elements. Metals are often alloyed with other elements to improve their properties.

In popular culture, metal is often associated with heavy metal music, which is a genre of rock music that is characterized by loud, distorted guitars, powerful vocals, and aggressive lyrics.