What does transformer mean?
A transformer is most commonly an electrical device that changes the voltage of alternating current while keeping the current flowing. Transformers are used to increase voltage for efficient long-distance transmission and to reduce it again for everyday use in homes and businesses. The term also has a broad meaning: a person, machine, or system that transforms or changes something. In modern computing, a transformer is a type of neural-network architecture based on attention, the design underlying many language models. The word can therefore suggest either the physical conversion of electrical energy or the more general reshaping of information, material, or ideas. Its long-standing technical meaning is firmly established, while its computing use is relatively recent but widely recognized. In ordinary conversation, mentioning a transformer usually suggests electrical power infrastructure unless the context is clearly technological.
nounA transformer is an electrical device that changes the voltage of an alternating current through electromagnetic induction. More broadly, it can mean a person, machine, or system that transforms something; in computing, a transformer is a neural-network architecture based on attention.
- An electrical device that changes the voltage of an alternating current, especially in electricity-supply and distribution systems.
- A neural-network architecture, or a model based on one, that uses attention mechanisms to process relationships between elements of a sequence.
- A person, machine, or system that transforms or changes something.
"The power transformer near the substation increases the voltage before electricity is transmitted over long distances."
"A failed transformer can interrupt power distribution across an entire district."
"The language model is based on a transformer architecture that uses attention to process context."
The standard plural is formed regularly by adding -s.
"Several transformers are installed at the power substation."
A transformer can make electricity step up for long-distance transmission, then step it down before it reaches your home.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does transformer come from?
Transformer was formed in English by adding the suffix -er to transform, producing a noun for something that performs transformation. Transform ultimately comes from Latin transformare, meaning “to change” or “to transform,” built from trans-, “across,” and formare, “to form.” The electrical sense developed in the nineteenth century as the technology became central to power distribution. The root form is also reflected in related English words such as transformation, reform, and uniform.
How transformer is actually used
The electrical sense is standard in general and technical usage. In artificial intelligence, a transformer specifically refers to a neural-network architecture based on attention. The broader sense, meaning a person or thing that changes or reshapes something, is less common and can sound formal or context-dependent.
Easily confused with transformer
A transformer changes voltage using electromagnetic induction, whereas a converter generally changes electrical energy from one form to another and may operate on either alternating or direct current.