sub·​sta·​tion | \ ˈsəb-ˌstā-shən How to pronounce substation (audio) \

Definition of substation

: 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

BJCTA Administrative offices and a police substation are also located there. Erin Edgemon,, "Taylor Hicks to perform at grand opening of Birmingham Intermodal Facility," 19 Feb. 2018 As crews finish the substation, and tower construction intensifies across the street, people walking will continue to find sidewalks blocked. Mike Lindblom, The Seattle Times, "Bus lane carved out of busy Denny Way eastbound in South Lake Union," 28 Aug. 2018 An electrical substation to power the growing South Lake Union neighborhood is still under construction, affecting users on Denny. Mike Lindblom, The Seattle Times, "Bus lane carved out of busy Denny Way eastbound in South Lake Union," 28 Aug. 2018 The records included information on systems that control physical as well as remote access to the utility’s control centers and electrical substations as well as the utility’s system that regulates electricity flows. Rebecca Smith, WSJ, "PG&E Identified as Utility That Lost Control of Confidential Information," 24 Aug. 2018 Indian Trail Academy and Tremper High School in Kenosha opened as warming centers Wednesday night after the outage caused by an equipment failure at an American Transmission Company substation, officials said. Jesse Garza, Milwaukee Journal Sentinel, "Power restored in Kenosha and Racine counties," 3 Jan. 2018 Eight of City Light’s excess properties were listed as both vacant and undeveloped, while the remaining two were substations no longer needed, according to the report. Daniel Beekman, The Seattle Times, "Surplus City Light properties could be sold below market value for low-income housing," 30 July 2018 The only point of communication and coordination between the transmission layer and the distribution layer beneath it would be at the TD interface (the substations). David Roberts, Vox, "Clean energy technologies threaten to overwhelm the grid. Here’s how it can adapt.," 30 Nov. 2018 Local providers including Duke Energy and Southern are deploying aerial gear fitted with infrared and high-zoom sensors that can inspect substations, locate malfunctioning solar panels and even help to restring power lines. Naureen S. Malik, The Seattle Times, "Drones ready to swoop in for Florence power recovery," 17 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'substation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of substation

1833, in the meaning defined above

Keep scrolling for more

Learn More about substation

Statistics for substation

Last Updated

27 Apr 2019

Look-up Popularity

Time Traveler for substation

The first known use of substation was in 1833

See more words from the same year

Keep scrolling for more

More Definitions for substation



English Language Learners Definition of substation

: a place where the strength of electricity is changed as the electricity passes through on its way from the power plant to homes and businesses
: a police station that serves a particular area

More from Merriam-Webster on substation

Rhyming Dictionary: Words that rhyme with substation Encyclopedia article about substation

Comments on substation

What made you want to look up substation? Please tell us where you read or heard it (including the quote, if possible).


behavior toward others

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Add Diction

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!