modulate

verb

mod·​u·​late ˈmä-jə-ˌlāt How to pronounce modulate (audio)
modulated; modulating

transitive verb

1
: to tune to a key or pitch
2
: to adjust to or keep in proper measure or proportion : temper
3
: to vary the amplitude, frequency, or phase of (a carrier wave or a light wave) for the transmission of information (as by radio)
also : to vary the velocity of electrons in an electron beam

intransitive verb

1
: to play or sing with modulation
2
: to pass from one musical key into another by means of intermediary chords or notes that have some relation to both keys
3
: to pass gradually from one state to another
modulator noun
modulatory adjective

Examples of modulate in a Sentence

Because she doesn't modulate her voice, she sounds the same when she's excited as when she's sad. The music quickly modulates from its original key, changing the mood of the song.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The approach combines three flexibility elements: compute workloads that can shift timing, cooling systems that can modulate power use, and backup generators that can feed power back to the grid. Jackie Snow, Quartz, 28 May 2025 While the disease mechanism isn't entirely understood, the virus appears to be able to modulate immune responses in humans, causing blood vessels and capillaries in various places in the body to start leaking plasma. Beth Mole, ArsTechnica, 28 May 2025 Studies indicate that the heart contains approximately 40,000 sensory neurites that play a pivotal role in modulating cognitive functions and emotional responses. Joseph Sudhip, Forbes.com, 5 May 2025 His floor is that of a steady contributor who knows how to modulate his speed to substantial effect. Ben Standig, New York Times, 26 Apr. 2025 See All Example Sentences for modulate

Word History

Etymology

Latin modulatus, past participle of modulari to play, sing, from modulus small measure, rhythm, diminutive of modus measure — more at mete

First Known Use

1615, in the meaning defined at transitive sense 1

Time Traveler
The first known use of modulate was in 1615

Cite this Entry

“Modulate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/modulate. Accessed 18 Jun. 2025.

Kids Definition

modulate

verb
mod·​u·​late ˈmäj-ə-ˌlāt How to pronounce modulate (audio)
modulated; modulating
1
: to tune to a key or pitch
2
: to adjust or regulate to the proper proportion
especially : to tone down : soften
modulated his voice
3
: to vary a quality (as frequency or amplitude) of an electromagnetic wave for the transmission of information (as by radio)
modulator noun
modulatory
-lə-ˌtōr-ē How to pronounce modulate (audio)
-ˌtȯr-
adjective

Medical Definition

modulate

transitive verb
mod·​u·​late ˈmäj-ə-ˌlāt How to pronounce modulate (audio)
modulated; modulating
: to adjust to or keep in proper measure or proportion
modulate an immune response
modulate cell activity
modulatory adjective

More from Merriam-Webster on modulate

Last Updated: - Updated example sentences
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