Definition of "Transformer"

Transformer

/tɹænsˈfɔɹmɚ/

noun
plural Transformers
1. (toys) A toy in the Transformers toyline which has mechanical parts that allow it to be altered in appearance from its original form as a humanoid robot action figure to another form, usually a vehicle, depending on the toy.
2. (fiction) In the Transformers franchise, any of the alien humanoid robots that can mechanically alter their appearance, or "transform", into a vehicle, creature, or (rarely) a tool.
  Quotations
  “It's like a Transformer today,” Stamm said. “It appears as one thing, then becomes another.”
  2015, Steve Berry, The Patriot Threat: A Novel, page 304
  A Transformer may be both a robot and a plane, or a robot and a car, but not both simultaneously.
  2014, Barbara Brownie, Transforming Type: New Directions in Kinetic Typography, page 95
  Halloween? I dressed up as a Transformer. I dressed up as a Power Ranger. I was one of the Chipmunks for God's sake.
  2012, Patricia Wettig, F2M, page 46