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

The museum relies on local experts to repair metalwork and refit electric transformers, though the chief concern lies in restoring a sign’s original color. —Alex Schechter, Travel + Leisure, 15 Apr. 2026

The capabilities of electricity grids and a shortage of equipment such as transformers and switchgear for expansion are another headwind. —Zachary Hansen, AJC.com, 13 Apr. 2026

The report also explains how this process can cause direct damage and premature aging of transformers, lowering the grid capacity in the months (or even years) after the space weather event. —Ryan French, Space.com, 13 Apr. 2026

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

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