transmission line

American  

noun

Electricity.

1. a system of conductors, as coaxial cable, a wave guide, or a pair of parallel wires, used to transmit signals.

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transmission line British  

noun

1. Sometimes shortened to: line.  a coaxial cable, waveguide, or other system of conductors that transfers electrical signals from one location to another

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Etymology

Origin of transmission line

First recorded in 1905–10

Example Sentences

Investigators found that the fire was ignited when equipment failed on a decades-old PG&E transmission line.

From Los Angeles Times • Apr. 9, 2026

A transmission line importing electricity from Uzbekistan was also damaged on Thursday, leaving households in almost 12 provinces without power.

From Barron's • Jan. 24, 2026

In 2019, investigators traced the Kincade fire in Sonoma County, which destroyed 374 homes and other structures, to a dormant transmission line owned by Pacific Gas & Electric.

From Los Angeles Times • Jan. 16, 2026

Edison has said the leading theory is that the dormant transmission line in Eaton Canyon briefly reenergized on the night of Jan. 7, sparking the fire.

From Los Angeles Times • Dec. 30, 2025

As an example of how to take advantage of this very valuable fact, let us take an instance: Say that Farmer Jones has a transmission line 1,000 feet long strung with No. 7 copper wire.

From Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine by Anderson, Frederick Irving