[ moj-uh-ley-shuhn, mod-yuh- ]
/ ˌmɒdʒ əˈleɪ ʃən, ˌmɒd yə- /
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the act of modulating.
the state of being modulated.
Music. transition from one key to another.
  1. the use of a particular distribution of stress or pitch in a construction, as the use of rising pitch on here in John is here?
  2. the feature of a construction resulting from such use.
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Origin of modulation

1350–1400; Middle English <Latin modulātiōn- (stem of modulātiō) rhythmical measure. See modulate, -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use modulation in a sentence

British Dictionary definitions for modulation

/ (ˌmɒdjʊˈleɪʃən) /

the act of modulating or the condition of being modulated
music the transition from one key to another
  1. another word for intonation (def. 1)
  2. the grammatical expression of modality
electrical engineering
  1. the act or process of superimposing the amplitude, frequency, phase, etc, of a wave or signal onto another wave (the carrier wave) or signal or onto an electron beamSee also amplitude modulation, frequency modulation, phase modulation, velocity modulation
  2. the variation of the modulated signal
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

Medical definitions for modulation

[ mŏj′ə-lāshən ]

The functional and morphological fluctuation of cells in response to changing environmental conditions.
The variation of a property in an electromagnetic wave or signal, such as amplitude, frequency, or phase.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.