entrain

¹

[ en-treyn ]

verb (used without object)

1. to go aboard a train.

verb (used with object)

1. to put aboard a train.

entrain

²

[ en-treyn ]

verb (used with object)

1. Chemistry. (of a substance, as a vapor) to carry along (a dissimilar substance, as drops of liquid) during a given process, as evaporation or distillation.
2. (of a liquid) to trap (bubbles).
3. Meteorology. to transfer (air) into an organized air current from the surrounding atmosphere ( detrain ).

entrain

¹

/ ɪnˈtreɪn /

verb

1. (of a liquid or gas) to carry along (drops of liquid, bubbles, etc), as in certain distillations
2. to disperse (air bubbles) through concrete in order to increase its resistance to frost
3. zoology to adjust (an internal rhythm of an organism) so that it synchronizes with an external cycle, such as that of light and dark

entrain

²

/ ɪnˈtreɪn /

verb

1. to board or put aboard a train

Derived Forms

• enˈtrainment, noun
• enˈtrainment, noun

Other Words From

• en·trainer noun

Word History and Origins

Origin of entrain¹

First recorded in 1880–85; en- ¹ + train

Origin of entrain²

First recorded in 1560–70; from Middle French entrainer, equivalent to en- verb prefix + trainer “to drag, trail”; en- ¹, train

Example Sentences

It suggests that the increased gamma activity of ketamine could entrain gamma activity among neurons expressing a peptide called VIP.

From Science Daily

"The cilia at a border region take the role as a pacemaker which entrain other cilia one after another," Hickey summarizes the findings.

From Science Daily

"Stronger storms entrain more moisture into them."

From Salon

Highs spin clockwise in the Northern Hemisphere, while lows spin counterclockwise; like meshing gears, the two oppositely spinning air masses conspire to entrain a strip of polar air from near the Hudson Bay and convey it southeast.

From Washington Post

"They also produce as much as 30% more flooding rainfall due to a combination of more evaporation from a warmer ocean surface and stronger winds that entrain more moisture into the storms."

From Salon

Related Words

• catch
• climb on
• enter
• get on
• hop on