phase

noun
\ ˈfāz How to pronounce phase (audio) \

Definition of phase

 (Entry 1 of 2)

1 : a particular appearance or state in a regularly recurring cycle of changes phases of the moon
2a : a distinguishable part in a course, development, or cycle the early phases of her career
b : an aspect or part (as of a problem) under consideration
3 : the point or stage in a period of uniform circular motion, harmonic motion, or the periodic changes of any magnitude varying according to a simple harmonic law to which the rotation, oscillation, or variation has advanced from its standard position or assumed instant of starting
4 : a homogeneous, physically distinct, and mechanically separable portion of matter present in a nonhomogeneous physicochemical system
5 : an individual or subgroup distinguishably different in appearance or behavior from the norm of the group to which it belongs also : the distinguishing peculiarity
in phase
: in a synchronized or correlated manner
out of phase
: in an unsynchronized manner : not in correlation

phase

verb
phased; phasing

Definition of phase (Entry 2 of 2)

transitive verb

1 : to adjust so as to be in a synchronized condition
2 : to conduct or carry out by planned phases
3 : to introduce in stages usually used with inphase in new models

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Other Words from phase

Noun

phasic \ ˈfā-​zik How to pronounce phasic (audio) \ adjective

Synonyms for phase

Synonyms: Noun

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Phase and Faze

Phase and faze are homophones (words pronounced alike but different in meaning, derivation, or spelling) that may easily be confused. Despite the similarity in pronunciation, these words bear little semantic resemblance to one another.

Although phase can function as a verb – it is found especially in combinations such as phase out, phase in, and phase into, meaning “to end, begin, etc. in phases” – the word is most commonly encountered as a noun, in which it typically carries a meaning related to steps in a process, cycles, or stages of development (as in “phases of the moon”).

Faze is generally used only as a verb, and means “to daunt or disconcert.” It often appears in negative expressions such as “it didn’t faze her a bit” or “nothing fazes him.”

Examples of phase in a Sentence

Noun The project will be done in three phases. He's in the final phase of treatment now. The building project marks a new phase in the town's development. He has been throwing tantrums a lot, but the doctor says it's just a phase. a calendar based on the phases of the moon
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Recent Examples on the Web: Noun Democrats expect Kent to testify publicly on Wednesday with William Taylor, the acting US ambassador to Ukraine, as the impeachment inquiry moves into a new phase. BostonGlobe.com, "‘‘Potus wanted nothing less than President Zelensky to go to the microphone and say investigations, Biden, and Clinton,’’ Kent testified. ‘‘Basically there needed to be three words in the message, and that was the shorthand.’’," 8 Nov. 2019 Overall, the Lions have been inconsistent on special teams, as in other phases of the game, looking very good some weeks and below average others. Dave Birkett, Detroit Free Press, "Grading the Detroit Lions at the midpoint of the season: The defense stinks," 8 Nov. 2019 The move heralds a new, more dangerous phase in the crisis over Iran’s nuclear programme. The Economist, "Iran’s nuclear programme takes a dangerous step," 7 Nov. 2019 But now that the film is long finished, Egerton — who first began talks about starring in Rocketman back in 2016 — seems to be entering a new phase. Shana Naomi Krochmal, EW.com, "How Taron Egerton's Rocketman role of a lifetime became a lifelong gig," 5 Nov. 2019 Marcia Koenig Leonard, born September 9, 1933, passed away at home, unexpectedly on October 20, 2019 after living 86 adventure filled years, and has moved on to a new phase of her Spirit's journey. courant.com, "Marcia Koenig Leonard," 3 Nov. 2019 On these drugs’ heels is fosmanogepix, a new broad-spectrum antifungal developed by Amplyx in San Diego that is now in phase II trials. Kai Kupferschmidt, Science | AAAS, "Four new drugs may help fight the growing threat of fatal fungi," 22 Oct. 2019 Mulvaney's initial remarks, made during a rare appearance by an administration official in the White House briefing room, spun open a new phase of the impeachment inquiry. oregonlive, "What is the meaning of ‘quid pro quo’?," 18 Oct. 2019 But Mulvaney’s initial remarks, made during a rare appearance by an administration official in the White House briefing room, spun open a new phase of the impeachment inquiry. Mary Clare Jalonick, Twin Cities, "White House: Ukraine aid held up in part over election probe," 17 Oct. 2019 Recent Examples on the Web: Verb Stimpson, during the meeting, said his administration offered a few years ago to shrink the size of the police jurisdiction by 1-1/2 miles through a phased-in approach with the Mobile County Sheriff’s Office, which would take on the extra residents. al, "Amid annexation talks, Mobile considers cutting police jurisdiction services," 5 Nov. 2019 Some of the changes set out in the contract would kick in right away, while others would be phased in. Hannah Leone, chicagotribune.com, "With CPS strike now over, will a new contract agreement transform classrooms in Chicago schools?," 31 Oct. 2019 With House Speaker Nancy Pelosi's announcement of a formal Trump impeachment inquiry, stock markets don't seem phased. Natasha Bach, Fortune, "A Running List of Questions on the Impeachment Inquiry, Answered," 26 Sep. 2019 In the company’s phase III clinical trial, participants gradually ramped up their dose, beginning at under one-500thof a peanut and flattening out at a maintenance dose equivalent to about one peanut. Jennifer Couzin-frankel, Science | AAAS, "First peanut allergy treatment gains backing from FDA advisory panel," 13 Sep. 2019 The higher age takes effect immediately — DeWine on Thursday vetoed a provision that would have phased it in for anyone who turns 18 years old before Oct. 1. Andrew J. Tobias, cleveland.com, "Ohio raises legal smoking age to 21," 18 July 2019 Governor Jeff Colyer, a Republican, endorsed a bill that would phase in a $534 million increase in education funding over five years, siding with GOP leaders in the House who largely drafted it. John Hanna, BostonGlobe.com, "Kansas increases school aid in response to court order," 9 Apr. 2018 The state House approved a bill that would phase in a $534 million increase in education funding over five years. John Hanna, Fox News, "GOP lawmakers in Kansas move to break school funding impasse," 7 Apr. 2018 On Tuesday, House Minority Leader Rocky Adkins filed a bill that would gradually phase in that increase over the next five years. Tom Loftus, The Courier-Journal, "Kentucky cities, counties and schools likely to get relief from soaring pension costs," 22 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'phase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of phase

Noun

1647, in the meaning defined at sense 1

Verb

1904, in the meaning defined at sense 1

History and Etymology for phase

Noun

New Latin phasis, from Greek, appearance of a star, phase of the moon, from phainein to show (middle voice, to appear) — more at fancy

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Statistics for phase

Last Updated

13 Nov 2019

Time Traveler for phase

The first known use of phase was in 1647

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More Definitions for phase

phase

noun
How to pronounce phase (audio)

English Language Learners Definition of phase

: a part or step in a process : one part in a series of related events or actions
: a short period of time during which a person behaves in a particular way or likes a particular thing
: the shape of the part of the moon that is visible at different times during a month

phase

noun
\ ˈfāz How to pronounce phase (audio) \

Kids Definition of phase

1 : a step or part in a series of events or actions : stage I have completed the first phase of my training.
2 : the way that the moon or a planet looks to the eye at any time in its series of changes with respect to how it shines The new moon and the full moon are two phases of the moon.

phase

noun
\ ˈfāz How to pronounce phase (audio) \

Medical Definition of phase

1 : a particular appearance or state in a regularly recurring cycle of changes
2 : a distinguishable part in a course, development, or cycle the early phases of a disease
3 : a point or stage in the period of a periodic motion or process (as a light wave or a vibration) in relation to an arbitrary reference or starting point in the period
4 : a homogeneous, physically distinct, and mechanically separable portion of matter present in a nonhomogeneous physicochemical system especially : one of the fundamental states of matter usually considered to include the solid, liquid, and gaseous forms
5 : an individual or subgroup distinguishably different in appearance or behavior from the norm of the group to which it belongs also : the distinguishing peculiarity

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