longitudinal - definition and synonyms

adjective 

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/ˌlɒndʒɪˈtjuːdɪn(ə)l/

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/ˌlɒŋɡɪˈtjuːdɪn(ə)l/
  1. 1
    going from the top to the bottom of something

    the longitudinal axis

  2. 2
    relating to the way that something develops during a period of time

    a longitudinal study of 141 children

derived word