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wave function

noun Physics.
  1. a solution of a wave equation.
  2. (in quantum mechanics) a mathematical function, found by solving a quantum-mechanical wave equation, that is used to predict the outcome of measurements on physical systems.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for wave function

wave function

noun
  1. physics a mathematical function of position and generally time, used in wave mechanics to describe the state of a physical systemSymbol: ψ
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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

wave function in Science

wave function

  1. A mathematical function used in quantum mechanics to describe the propagation of the wave associated with a particle or group of particles. The wave function is a solution to Schrödinger's equation, given the boundary conditions that describe the physical system in which the particle is found. The square of the function evaluated at a given point in space is proportional to the probability of finding the particle in the immediate vicinity of that position.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.