English · Science & Technology
transformer
/trænsˈfɔː.mə/
[/trænsˈfɔː.mə/]
voltage-changing device
Advancednoun
Definition
A device that increases or decreases the voltage of an electric current.
Example
A transformer reduces the high voltage from power lines to a level safe for household use.
A transformer reduces the high voltage from power lines to a level safe for household use.
Etymology
From 'transform', from Latin 'transformare' (to change shape), plus the suffix '-er'.
How & Where It’s Used
Essential in power grids and electronic devices; also a famous toy and film brand.