Definition of parallel adjective from the Oxford Advanced Learner's Dictionary

        

    parallel

     adjective
    adjective
    BrE BrE//ˈpærəlel//
     
    ; NAmE NAmE//ˈpærəlel//
     
     
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  1. 1  two or more lines that are parallel to each other are the same distance apart at every point parallel lines parallel to/with something The road and the canal are parallel to each other.
  2. 2very similar or taking place at the same time a parallel case parallel trends
  3. 3 (computing) involving several computer operations at the same time parallel processing
  4. Word Origin mid 16th cent.: from French parallèle, via Latin from Greek parallēlos, from para- ‘alongside’ + allēlos ‘one another’.Extra examples The lane is roughly parallel to the main road. The road runs parallel with the coast. Though still a committed painter, in 1978 she launched a parallel career as a photographer. Two poisonings have been reported recently in London and now there has been a parallel case in the Netherlands.
See the Oxford Advanced American Dictionary entry: parallel