Definition
A resistor made by winding a length of resistance wire (typically a nickel-chromium alloy such as Nichrome) around an insulating core, then sealing it with a protective coating. The resistance value is set by the wire's material, diameter, and length. Wire-wound resistors handle higher power and dissipate more heat than carbon-composition or film resistors, and they hold their resistance value accurately under load.
Plain English
A resistor built by coiling a special wire around a non-conducting form. The length and thickness of the wire decide how much it resists the flow of electricity. This style is used where the part has to carry a lot of current and stay cool and accurate.
Context Anchor
Seen in aircraft electrical maintenance, especially when checking or replacing resistors in power, lighting, heating, or instrument circuits.
Derivation
Resistor comes from the Latin resistere, meaning to stand against or hold back. The name 'wire-wound' simply describes how it is built: a wire wound around a core. The phrase tells you both what it does (resists current) and how it is made.
Why Pilots Care
Provides stable, high-power resistance in aircraft circuits for instruments, lights, and power distribution without overheating or drifting.
Intuition Check
Do not think of it as just a piece of ordinary wire. The wire is chosen and sized to create a specific resistance, and the winding is part of how the resistor is built.
Example Sentence 1
The panel light dimmer uses a wire-wound resistor because it must carry steady current without overheating.
Example Sentence 2
Technicians checked the wire-wound resistor in the voltage regulator for signs of heat damage after a long flight.