noun
- a unit of electrical resistance equal to one million ohms
Usage: technical
Examples
- The resistor had a value of 2.5 megohms.
- High-voltage circuits often use components rated in megohms.
- The insulation resistance measured 50 megohms.
- A megohm is abbreviated as MΩ in electrical diagrams.
- The multimeter can measure resistance up to 20 megohms.
- Cable insulation typically has a resistance of several megohms per mile.