1

phase

noun \ ˈfāz \
Updated on: 23 Nov 2017

Definition of phase

1 : a particular appearance or state in a regularly recurring cycle of changes
  • phases of the moon
2 a : 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

phasic

play \ˈfā-zik\ adjective
in phase
: in a synchronized or correlated manner
out of phase
: in an unsynchronized manner : not in correlation

Examples of phase in a Sentence

  1. The project will be done in three phases.

  2. He's in the final phase of treatment now.

  3. The building project marks a new phase in the town's development.

  4. He has been throwing tantrums a lot, but the doctor says it's just a phase.

  5. a calendar based on the phases of the moon

Recent Examples of phase from the Web

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.

Origin and Etymology of phase

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


2

phase

verb

Definition of phase

phased; phasing
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

Recent Examples of phase from the Web

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.

First Known Use of phase

1904



PHASE Defined for English Language Learners

phase

noun

Definition of phase for English Language Learners

  • : 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 Defined for Kids

phase

noun \ ˈfāz \

Definition of phase for Students

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.

Medical Dictionary

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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