phase
any of the major appearances or aspects in which a thing of varying modes or conditions manifests itself to the eye or mind.
a stage in a process of change or development: Each phase of life brings its own joys.
a side, aspect, or point of view: This is only one phase of the question.
a state of synchronous operation: to put two mechanisms in phase.
Astronomy.
the particular appearance presented by the moon or a planet at a given time.
one of the recurring appearances or states of the moon or a planet in respect to the form, or the absence, of its illuminated disk: the phases of the moon.
Zoology. color phase.
Chemistry. a mechanically separate, homogeneous part of a heterogeneous system: the solid, liquid, and gaseous phases of a system.
Physics. a particular stage or point of advancement in a cycle; the fractional part of the period through which the time has advanced, measured from some arbitrary origin often expressed as an angle (phase angle ), the entire period being taken as 360°.
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.
phase down, to reduce by gradual stages.
phase in, to put or come into use gradually; incorporate by degrees: to phase in new machinery.
phase out, to bring or come to an end gradually; ease out of service: to phase out obsolescent machinery.
Origin of phase
1Other words for phase
Other words from phase
- phase·less, adjective
- pha·sic, pha·se·al [feyz-uhl], /ˈfeɪz əl/, adjective
- re·phase, verb (used with object) re·phased, re·phas·ing.
- sub·phase, noun
- un·phased, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use phase in a sentence
The fourth operation, which was again split into two phases, lasted from March 24 until May 13, 2011 and was successful.
The Seahawks dominated the Broncos in all three phases of the game as they eventually cruised to victory by a score of 43-8.
Seahawks-Broncos and 7 Other Thrilling Super Bowl Matchups | Ben Jacobs | February 6, 2014 | THE DAILY BEASTThey all went through chubby phases of their own, but ended up looking sculpted.
Where Have All the Fat Rappers Gone? Or, How Hip-Hop Lost All the Weight. | Emilia Petrarca | August 28, 2013 | THE DAILY BEASTEqually important, the budget phases in those changes down the road when the economy (we hope) will be stronger.
Obama Should Use His Budget to Reject Austerity and Promote Growth | Robert Shapiro | April 10, 2013 | THE DAILY BEASTGruenewald chalks it up to the early phases of any budding revolution.
The high pitch represents mentality, the esthetic phases of beauty, and much brilliancy.
Expressive Voice Culture | Jessie Eldridge SouthwickWe would classify these two departments in this way, though in the highest dramatic work elements of both phases are combined.
Expressive Voice Culture | Jessie Eldridge SouthwickGermany, with characteristic system and detail, provided different kinds of banks to deal with different phases of the situation.
Readings in Money and Banking | Chester Arthur PhillipsThe observance, under various phases, is described in Scripture as an undisputed and indisputable reality.
The Ordinance of Covenanting | John CunninghamMuch older than I he had long since passed through these youthful phases.
Fifty Years of Railway Life in England, Scotland and Ireland | Joseph Tatlow
British Dictionary definitions for phase
/ (feɪz) /
any distinct or characteristic period or stage in a sequence of events or chain of development: there were two phases to the resolution; his immaturity was a passing phase
astronomy one of the recurring shapes of the portion of the moon or an inferior planet illuminated by the sun: the new moon, first quarter, full moon, and last quarter are the four principal phases of the moon
physics
the fraction of a cycle of a periodic quantity that has been completed at a specific reference time, expressed as an angle
(as modifier): a phase shift
physics a particular stage in a periodic process or phenomenon
in phase (of two waveforms) reaching corresponding phases at the same time
out of phase (of two waveforms) not in phase
chem a distinct state of matter characterized by homogeneous composition and properties and the possession of a clearly defined boundary
zoology a variation in the normal form of an animal, esp a colour variation, brought about by seasonal or geographical change
biology (usually in combination) a stage in mitosis or meiosis: prophase; metaphase
electrical engineering one of the circuits in a system in which there are two or more alternating voltages displaced by equal amounts in phase (sense 5): See also polyphase (def. 1)
(in systemic grammar) the type of correspondence that exists between the predicators in a clause that has two or more predicators; for example connection by to, as in I managed to do it, or -ing, as in we heard him singing
(often passive) to execute, arrange, or introduce gradually or in stages: a phased withdrawal
(sometimes foll by with) to cause (a part, process, etc) to function or coincide with (another part, process, etc): he tried to phase the intake and output of the machine; he phased the intake with the output
mainly US to arrange (processes, goods, etc) to be supplied or executed when required
Origin of phase
1Derived forms of phase
- phaseless, adjective
- phasic or phaseal, adjective
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
[ 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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