A change in a feature of a physical system that results in a discrete transition of that system to another state. For example, the melting of ice is a phase transition of water from a solid phase to a liquid phase. Phase transitions often involve the absorption or emission of energy from the system; ice, at 0 ° Celsius, must absorb a considerable amount of heat energy to become water. See also state of matter, thermodynamics.
noun, Physics. 1. the velocity with which a simple harmonic wave is propagated, equal to the wavelength divided by the period of vibration.
(MIT) wrap around. [Jargon File] (1995-02-22)
1. a combining form used in the names of speech disorders, as specified by the initial element: aphasia. combining form 1. indicating speech disorder of a specified kind: aphasia -phasia suff. A speech disorder of a specified kind: dysphasia.
[feyz] /feɪz/ noun 1. any of the major appearances or aspects in which a thing of varying modes or conditions manifests itself to the eye or mind. 2. a stage in a process of change or development: Each phase of life brings its own joys. 3. a side, aspect, or point of view: This is […]