IPA: /ɪnˈtreɪn/
KK: /ɪnˈtreɪn/
To board or get on a train.
We will entrain at the station for our trip to the city.
Past: entrained
Past Participle: entrained
To carry something along with a current or to draw something after itself, often used in scientific contexts.
The river can entrain small particles as it flows.
Past: entrained
Past Participle: entrained
Entrain is formed from "en-" (meaning to cause to be in) and "traîner" (from Old French, meaning to pull or drag). The word describes the act of causing something to be pulled along or carried with something else, often used in the context of fluids or particles being carried along by a current.
Think of something being 'pulled along' ('traîner') as it is 'caused to be in' ('en-') a flow or movement.