entrain
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1en·train

transitive verb \in-ˈtrān\

Definition of ENTRAIN

1
: to draw along with or after oneself
2
: to draw in and transport (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>
en·train·er noun
en·train·ment \-ˈtrān-mənt\ noun

Origin of ENTRAIN

Middle French entrainer, from en- + trainer to draw, drag — more at train
First Known Use: 1568

2entrain

verb

Definition of ENTRAIN

transitive verb
: to put aboard a train
intransitive verb
: to go aboard a train

First Known Use of ENTRAIN

1881

en·train

transitive verb \in-ˈtrān\   (Medical Dictionary)

Medical Definition of ENTRAIN

: to determine or modify the phase or period of <circadian rhythms entrained by a light cycle>
en·train·ment \-ˈtrān-mənt\ (audio pronunciation) noun

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