1

entrain

play
verb en·train \ in-ˈtrān \

Definition of entrain

transitive verb
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

entrainment

play \in-ˈtrān-mənt\ noun

Recent Examples of entrain from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'entrain.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of entrain

Middle French entrainer, from en- + trainer to draw, drag — more at 2train


2

entrain

verb

Definition of entrain

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

Recent Examples of entrain from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'entrain.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of entrain

1881


Medical Dictionary

entrain

play
transitive verb en·train \ in-ˈtrān \

medical Definition of entrain

:to determine or modify the phase or period of
  • circadian rhythms entrained by a light cycle

entrainment

play \-ˈtrān-mənt\ noun

Learn More about entrain


Seen and Heard

What made you want to look up entrain? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

agreeable, attractive, or delicious

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!