entrain

/ɪnˈtreɪn/
verb
  1. To cause something to become trapped or carried along in a flow of liquid or air.
    • Air bubbles become entrained in the water when you shake a bottle.
    • The river can entrain large amounts of sediment during a flood.
    • The vacuum cleaner entrains dust particles into its filter.
  2. To synchronize or align a biological rhythm or process with an external cycle.
    • The circadian rhythm can be entrained by regular meal times.
    • Exposure to sunlight helps entrain your body's internal clock to a 24-hour day.
    • Jet lag occurs when your sleep-wake cycle is not entrained to the local time zone.
  3. To board a train.
    • We entrained early to avoid the rush hour crowd.
    • The soldiers entrained at the station and headed to the front.
    • Passengers will entrain at platform 9 for the express service.
What does "entrain" mean? | whatsthatwordmean | whatsthatwordmean