transformer

noun

trans·​form·​er tran(t)s-ˈfȯr-mər 

: one that transforms

specifically : a device employing the principle of mutual induction to convert variations of current in a primary circuit into variations of voltage and current in a secondary circuit

Examples of transformer in a Sentence

Recent Examples on the Web

Some fear Iran’s ability to conduct cyber operations that could take down transformers or power inverters, if not a wide-scale power system. —Los Angeles Times, 7 Apr. 2026

Xcel Energy confirmed Tuesday that the March 18 blackout occurred as crews were energizing a new transformer at a substation when the equipment failed. —Brian Maass, CBS News, 7 Apr. 2026

The initiative provided free connections to households and small businesses located near transformers, with funders covering the standard $115 connection fee. —ABC News, 1 Apr. 2026

For the new Monon Corridor, one of the transformers on the new route still needs to be replaced. —Doug Ross, Chicago Tribune, 1 Apr. 2026

Word History

First Known Use

1596, in the meaning defined above

Phrases Containing transformer

• Tesla transformer

Rhymes for transformer

• conformer
• informer
• performer
• reformer
• dormer
• former
• warmer

Kids Definition

transformer

noun

trans·​form·​er tran(t)s-ˈfȯr-mər 

: a device for changing an electric current into one of different voltage