noun
substation
noun
1
A facility that converts or regulates electricity from high-voltage transmission lines for local use.
"A fault at the substation knocked out power to the whole street."
2
A small local branch of a larger station, such as a police station or post office.
"The neighborhood police substation handles minor complaints so the main precinct doesn't have to."
How to Use Substation
Learner’s notesIn plain EnglishA smaller, local version of a bigger station — most often used for electricity.
Common pairings
electrical substation
power substation
police substation
Word Forms
substations plural
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A fault at the _____ knocked out power to the whole street.
Etymology
From sub- ("under, secondary") plus station.