entrained; entraining; entrains
1
: to draw along with or after oneself
2
: to draw in and transport (something, such as solid particles or gas) by the flow of a fluid
3
: to incorporate (air bubbles) into concrete
4
: to determine or modify the phase or period of
circadian rhythms entrained by a light cycle
entrainer
noun
entrained; entraining; entrains
: to put aboard a train
: to go aboard a train
Examples of entrain in a Sentence
Recent Examples on the Web
Jeffrey Kluger, Time, 22 Oct. 2025
To keep dirt particles kicked up by the beater brush entrained in the airstream, the air needed to move fast.
—IEEE Spectrum, 15 Oct. 2025
If a bunch of grandfather clocks are put in room together, for example, the biggest amplitude signal will entrain the others.
—Ginny Whitelaw, Forbes.com, 1 Sep. 2025
In the inner solar system—this side of Jupiter—the proximity of the sun causes both free-floating water and water entrained on bodies like asteroids to flash into vapor.
—Jeffrey Kluger, TIME, 30 Sep. 2024
See All Example Sentences for entrain
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Verb
Warmer air, for example, boosts evaporation, which leads to more moisture entrained in the atmosphere, intensifying rainfalls, while warmer oceans provide an energy source for more violent hurricanes.
—Jeffrey Kluger, Time, 22 Oct. 2025
To keep dirt particles kicked up by the beater brush entrained in the airstream, the air needed to move fast.
—IEEE Spectrum, 15 Oct. 2025
If a bunch of grandfather clocks are put in room together, for example, the biggest amplitude signal will entrain the others.
—Ginny Whitelaw, Forbes.com, 1 Sep. 2025
In the inner solar system—this side of Jupiter—the proximity of the sun causes both free-floating water and water entrained on bodies like asteroids to flash into vapor.
—Jeffrey Kluger, TIME, 30 Sep. 2024
See All Example Sentences for entrain
Cite this Entry
“Entrain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/entrain. Accessed 26 Oct. 2025.
Copy CitationMedical Definition
entrain
transitive verb
en·train
in-ˈtrān 
: to determine or modify the phase or period of
circadian rhythms entrained by a light cycle
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