What is the meaning of Transformer?

Something that transforms, changing its own or another thing's shape.

A static device that transfers electric energy from one circuit to another by magnetic coupling. Their main use is to transfer energy between different voltage levels, which allows choosing most appropriate voltage for power generation, transmission and distribution separately.

A neural network architecture that relies on self-attention mechanisms.

Alternative letter-case form of Transformer

transformer

imperative of transformere

to transform

first-person singular present passive subjunctive of trānsfōrmō

indefinite plural of transform

Source: wiktionary.org