a comparative level of capacity for vigorous activity: The child has a high energy level.
Also called energy state. Physics. one of a quantized series of states in which matter may exist, each having constant energy and separated from others in the series by finite quantities of energy.
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Origin of energy level
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for energy level
a constant value of energy in the distribution of energies among a number of atomic particles
the energy of a quantum state of a system. The terms energy level and energy state are often used loosely to mean quantum state . This is avoided in precise communication
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
Science definitions for energy level
One of a set of states of a physical system associated with a range of energies. Electrons in an atom, for example, can shift between the different energy levels corresponding to orbitals in different shells. Also called energy state
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.