a substance or object that allows energy (such as heat or electricity) to move through it efficiently. Examples include copper and steel.

A good conductor of electricity or heat is a material that can transmit energy with little resistance. Some common examples of good conductors include metals such as copper, aluminum, gold, and silver. These materials have properties that allow electrical current or thermal energy to flow through them easily. Conductors are essential in various applications, including electrical wiring, circuit boards, and cooking utensils, where efficient energy transfer is critical.