entrainment

entrainment · noun¹

1. French · borrowed fromentraînement
2. English todayentrainment

Partly from French entraînement and partly entrain + -ment.

entrainment · noun²

From entrain (“to board or put aboard a train”) + -ment.

First known use, by meaning

• from 1836 Enthusiasm, liveliness; impulsiveness.
• from 1892 The carrying away of droplets of liquid during violent boiling.
• from 1892 The movement of sediment in a stream of water or in a glacier.
• from 1892 The mixing of air currents.
• from 1892 The mixing of out flowing river water and underlying seawater.
• from 1881 The act of someone or something boarding or being put aboard a train.