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phase

[ feyz ]
/ feɪz /
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See synonyms for: phase / phases on Thesaurus.com

noun
verb (used with object), phased, phas·ing.
to schedule or order in gradual stages, so as to be available when or as needed.
Physics. to adjust the phase of (an electrical or mechanical device), especially to synchronize it with that of one or more other devices: a properly phased, synchronous pulse generator that augments the action of the human heart.
Verb Phrases
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Origin of phase

First recorded in 1805–15; (noun) back formation from phases, plural of phasis

OTHER WORDS FROM phase

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use phase in a sentence

British Dictionary definitions for phase

phase
/ (feɪz) /

noun
verb (tr)

Derived forms of phase

phaseless, adjectivephasic or phaseal, adjective

Word Origin for phase

C19: from New Latin phases, pl of phasis, from Greek: aspect; related to Greek phainein to show
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

Scientific definitions for phase

phase
[ fāz ]

Any of the forms, recurring in cycles, in which the Moon or a planet appears in the sky.
One of a set of possible homogenous, discrete states of a physical system. States of matter such as solid and liquid are examples of phases, as are different crystal lattice structures in metals such as iron. See also phase transition state of matter.
A measure of how far some cyclic behavior, such as wave motion, has proceeded through its cycle, measured in degrees or radians. At the beginning of the phase, its value is zero; at one quarter of its cycle, its phase is 90 degrees (π/2 radians); halfway through the cycle its value is 180 degrees (π radians), and so on.♦ The phase angle between two waves is a measure of their difference in phase. Two waves of the same frequency that are perfectly in phase have phase angle zero; if one wave is ahead of the other by a quarter cycle, its phase angle 90 degrees (π/2 radians); waves that are perfectly out of phase have phase angle 180 degrees (π radians), and so on. See more at wave.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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