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three-phase

American

[three-feyz] / ˈθriˌfeɪz /

adjective

Electricity.

of or relating to a circuit, system, or device that is energized by three electromotive forces that differ in phase by one third of a cycle or 120°.
having three phases.

three-phase British

adjective

(of an electrical system, circuit, or device) having, generating, or using three alternating voltages of the same frequency, displaced in phase by 120°

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of three-phase

First recorded in 1890–95

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"We won 15 lower house seats out of 16 places in Yangon region," they added, after Kawhmu and dozens of other constituencies voted on Sunday in the second stage of a three-phase election.

From Barron's • Jan. 12, 2026

Using advanced microscopy, the researchers identified a three-phase sequence that coral fragments follow when attaching to the reef surface.

From Science Daily • Oct. 29, 2025

Gen Halevi is currently overseeing the IDF's compliance with a three-phase Gaza ceasefire deal with Hamas that should see the remaining Israeli hostages released in exchange for hundreds of Palestinian prisoners in Israeli jails.

From BBC • Jan. 21, 2025

More daunting still, these disputes concern the first phase of what is to be a three-phase deal.

From Slate • Sep. 11, 2024

Inside this anchor tube ran the thick coaxial cable that fed three-phase electric power from the atomic pile to the ship.

From Where I Wasn't Going by Richmond, Walt

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023