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

Some is entrained in permafrost at the poles, and more may have retreated underground, in aquifers where the water would be liquid at least for some parts of the Martian year.

From Time

So when we’re in sync, many of the rhythms of our brains and bodies entrain—heart and respiration rates, certain brain wave patterns.

From Nautilus

Either way, the fact that the planet may be so heavily hydrated does not, alas, mean much for the possibility of Martian life, since the water molecules are entrained in the rocks and clay, not percolating in free-standing underground pools.

From Time

Those collisions provide the heat to convert hydroxyl molecules to water molecules, but those molecules are then entrained within microscopically small glass beads also created by the collisions.

From Time

There was a general rush to the stores after dinner, as we hear we are to entrain for Pretoria to-morrow.

From Project Gutenberg

Orders were received for the Regiment to entrain for Machadodorp for the purpose of garrisoning the railway blockhouses.

From Project Gutenberg

Perhaps some soldiers are going along to a place of meeting, where they expect to entrain for the front.

From Project Gutenberg

Nobody came to the hotel to inform them when the unit was to entrain.

From Project Gutenberg

The men, their kitbags already packed and their equipment on, rapidly began to entrain in the waiting troop trains.

From Project Gutenberg

Related Words

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