What does multiphase mean?
Multiphase is an adjective describing anything that has more than one phase or operates in multiple phases. Its most established technical use is in electrical engineering, where a multiphase system carries alternating currents or voltages whose waveforms reach their peaks and troughs at different times. Such systems can provide more efficient power transmission and are used in industrial motors, generators, transformers, and power distribution. More generally, the word can refer to physical processes, signals, or activities that unfold in several distinct stages or cycles. It is related to the more specialized term polyphase, while monophase or single-phase describes a system with one phase. The word is primarily technical, and in general writing a phrase such as "multiple phases" may sound clearer.
adjectiveConsisting of, involving, or occurring in more than one phase. In electrical engineering, it describes a system in which alternating currents or voltages have different phases.
- Consisting of or involving more than one phase.
- Relating to or involving electrical currents or voltages that differ in phase.
"The new turbine uses a multiphase generator to produce a steady stream of electricity."
"The engineers tested the multiphase system under varying load conditions."
"Multiphase alternating current is commonly used in industrial power systems."
Multiphase power lets electrical systems transmit and use energy more efficiently than simple single-phase systems.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does multiphase come from?
Multiphase was formed in the early 20th century from the combining form multi-, meaning "more than one," and phase, a term used in physics for the stage or position in a repeating cycle. The word developed particularly in connection with electrical systems, where phase describes the relative timing of alternating waveforms. Polyphase and monophase are related technical formations, while biphase denotes a two-phase system.
How multiphase is actually used
The term is most common in electrical engineering, physics, and technical descriptions of systems that operate in distinct phases. It is often written with a hyphen as "multi-phase," especially in technical and compound-adjective contexts.