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

On Tuesday evening, a fire broke out at a substation near Daly City, which led to service being stopped between West Oakland and Daly City in both directions. — Tim Fang, CBS News, 10 Sep. 2026

Rail links to Britain's busiest airport were suspended at the weekend due to a fire, while the entire airport shut down for almost a whole day in March 2025 due to a power outage at a nearby electrical substation. — Jenni Reid, CNBC, 9 Sep. 2026

After investigating 600 items of evidence related to the substation, the National Energy System Operator ruled out suspicious activity in a report saying a preventable moisture fault caused the fire, leaving almost 70,000 homes without power. — Henry Austin, NBC news, 8 Sep. 2026

Authorities were investigating a suspicious device found near a substation in Dormagen, North Rhine-Westphalia, on Friday, following incidents in Bergheim and Brandenburg. — Efrat Lachter, FOXNews.com, 5 Sep. 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