1. electrical devices that change the voltage of alternating current
Usage: technical
2. fictional robots that can change into vehicles or other objects
Usage: entertainment; trademark
3. people or things that cause major changes or improvements

Examples

• The power grid uses transformers to reduce voltage for home use.
• Electrical transformers are essential components of the distribution system.
• My son loves playing with his Transformers action figures.
• The movie featured giant robots called Transformers.
• These new teachers are real transformers in our school system.
• Technology companies often see themselves as transformers of society.
• The transformer on the utility pole supplies power to our neighborhood.