The term "Ohm" refers to the unit of electrical resistance in the International System of Units (SI). It is named after the German physicist Georg Simon Ohm, who formulated Ohm's Law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance. One ohm is defined as the resistance that allows one ampere of current to flow when one volt of electrical potential is applied. In practical terms, understanding ohms is essential for designing and analyzing electrical circuits, as it helps determine how much current will flow for a given voltage and resistance.