substation

noun

sub·​sta·​tion ˈsəb-ˌstā-shən 

: a subordinate or subsidiary station: such as

a

: a branch post office

b

: a subsidiary station in which electric current is transformed

c

: a police station serving a particular area

Examples of substation in a Sentence

Recent Examples on the Web

In Abu Hamad, a drone strike the same day destroyed the substation and knocked it out of service but caused no casualties, the local security committee said. — Hamza Fahmy, Los Angeles Times, 1 Nov. 2026

Huddlestun said the delivery of five transformers for installation at the NIPSCO substation inside the 723-acre development at 61st and Colorado Street will occur between November 13-24. — Jim Masters, Chicago Tribune, 27 Oct. 2026

This is one of three segments in Section 2, and will end at the northeast corner of the Georgia Power Company substation. — Dan Raby, CBS News, 27 Oct. 2026

Every transformer on the grid—from the cylinders perched on utility lines to the big spiky devices at substations—trades voltage for current at a fixed ratio. — Alex Pasternack, Scientific American, 20 Oct. 2026

Word History

First Known Use

1833, in the meaning defined above

Rhymes for substation

• ablation
• aeration
• bination
• carnation
• cassation
• castration
• causation
• centration
• cessation
• cetacean
• chelation
• citation

Kids Definition

substation

noun

sub·​sta·​tion ˈsəb-ˌstā-shən 

1

: a branch post office

2

: a subsidiary station in which electric current is transformed