D defs.my
Entry 1 sense Webster, 1913

Pro rata

/prō răt'-ə/ · Pro· ra·ta · IPA /ˌpɹəʊ ˈɹɑːtə/
01 In proportion; proportionately; according to the share, interest, or liability of each.
  1. 1.
    In proportion; proportionately; according to the share, interest, or liability of each.