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parallel

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adjective American English pronunciation: parallel /ˈperəˌlel/
  1. 1
    math lines that are parallel are the same distance apart at every point along their whole length

    I drew two parallel lines around the border of the drawing.

    parallel to:

    He leaned forward so that his body was almost parallel to the ground.

    parallel with:

    The river enters the town from the east and flows parallel with the main street.

  2. 2
    happening at the same time or in the same way but separately

    There will be parallel announcements from both governments.

    Parallel efforts by many groups aim to research how to use the Internet more successfully.

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