phase

noun
\ˈfāz \

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 in phase in new models

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Other Words from phase

Noun

phasic \ˈfā-zik \ adjective

Synonyms for phase

Synonyms: Noun

angle, aspect, facet, hand, side

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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

The centerpiece of what will be the next phase of Lindbergh Field’s redevelopment is the remaking of Terminal 1, which would eventually grow from its existing 19 gates to 30. Lori Weisberg, sandiegouniontribune.com, "Airport releases environmental analysis of $3B plan to redevelop terminals," 10 July 2018 City officials said the first phase of the signage is to get traffic to destinations throughout the city. Linda Girardi, Aurora Beacon-News, "Yorkville looks at signs to draw more people downtown," 9 July 2018 Ideally that next phase is a sweaty, body-to-body dance party. Allison P. Davis, The Cut, "Turn Your Summer BBQ Into a Full-on Dance Party," 3 July 2018 Failure to comply may result in a $250 fine, although city leaders told the Times that the initial phase of the law is more about raising awareness than going table to table and giving tickets to rogue customers. Cleve R. Wootson Jr., chicagotribune.com, "Seattle becomes first major U.S. city to ban straws," 2 July 2018 The next phase of the movement borne of the Feb. 14 mass shooting at Stoneman Douglas High School is dual bus tours, statewide and nationwide. Tonya Alanez, Sun-Sentinel.com, "Student activists on 'Road to Change' make Fort Lauderdale stop," 30 June 2018 The aircraft was based at nearby Holloman Air Force Base, where the second phase of the Light Attack Experiment has been underway since May 7. Kyle Mizokami, Popular Mechanics, "Air Force Light Attack Plane Crash Kills One Pilot, Injures Another," 27 June 2018 The King Lear phase of Plummer's career has been colorfully crowded with aged men too roiled by appetite to resemble any standard portraits of the elderly. Jake Coyle, azcentral, "Christopher Plummer may play a weed dealer, but he's no pothead in real life," 26 June 2018 This winter, after the design phase is complete, the Navy will choose one contractor to build up to five drones. Samantha Masunaga, latimes.com, "Boeing's robot submarine is back roaming off the California coast," 23 June 2018

Recent Examples on the Web: Verb

Other solid state lidars use a technology called optical phased arrays to steer a laser beam with no moving parts. Timothy B. Lee, Ars Technica, "Why spinning lidar sensors might be around for another decade," 7 May 2018 Cobra Dane’s main component is a L-Band phased array radar operating in the 1175-1375 MHz ranges. Kyle Mizokami, Popular Mechanics, "This Remote Alaskan Radar Is America's First Line of Defense," 2 May 2018 An earlier version of the bill would have had employees contribute a phased-in amount of up to 3 percent. Mandy Mclaren, The Courier-Journal, "Gov. Matt Bevin signs controversial, GOP-crafted pension reform bill into law," 10 Apr. 2018 The report comes as lawmakers are considering legislation to end Atlantic salmon net-pen farming in Puget Sound immediately upon signature of the governor, or phase it out as Cooke’s leases expire. Lynda V. Mapes, The Seattle Times, "Fish farm caused Atlantic salmon spill near San Juans, then tried to hide how bad it was, state says," 2 Feb. 2018 Phase two must have an additional $35 million investment and a minimum 165,000 square feet of commercial or residential space, and phase three another $60 million investment and at least 200,000 square feet of space. star-telegram, "Developer seeks $18.5 million in incentives for Waterside project | Fort Worth Star-Telegram," 18 Feb. 2014 Large private food retailers like McDonald’s, Dunkin’ Donuts, Jamba Juice, and Chick-fil-A already have phased out polystyrene products or plan to phase them out or implement new recycling processes. Camille Harmer, Fortune, "How Banning Plastic Straws Could Make Pollution Even Worse," 12 July 2018 And when static from the synthesizer crept into the sound mix, that didn’t phase her either. Milwaukee Journal Sentinel, "Best and worst of Summerfest Day 4: In Real Life, Kaleo, Buddy Guy, Jonny Lang and more," 30 June 2018 Does living in a haunted house not phase you? Love historic homes? Perri Ormont Blumberg, Southern Living, "Tour a Stately 19th Century Louisiana Home That's for Sale for $675,000," 29 June 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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Phrases Related to phase

phase in

Statistics for phase

Last Updated

16 Oct 2018

Look-up Popularity

Time Traveler for phase

The first known use of phase was in 1647

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More Definitions for phase

phase

noun

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 \

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 \

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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More from Merriam-Webster on phase

Thesaurus: All synonyms and antonyms for phase

Spanish Central: Translation of phase

Nglish: Translation of phase for Spanish Speakers

Britannica English: Translation of phase for Arabic Speakers

Britannica.com: Encyclopedia article about phase

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