ohm
n. countable C2 Proficiency US //ˈoʊm// UK //ˈəʊəm// ohm
n. the standard unit used to measure how much a material resists the flow of electricity. A higher number means it is harder for the current to pass through.
n. the SI unit of electrical resistance, equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere. Named after the German physicist Georg Simon Ohm.
The speaker has an impedance of eight ohms.
To protect the LED from burning out, the engineer added a ten-ohm resistor to the circuit.
The precision of the measurement was critical, as even a fraction of an ohm could significantly alter the performance of the high-frequency transmitter.
Usage
Often represented by the Greek letter omega (Ω).