vectorial

/V EH1 K T AO1 R IY0 AH0 L/
adjective
  1. 1

    Of or pertaining to a vector.

  2. 2

    In the electron transport chain, being or relating to a type of enzyme-mediated reaction that moves protons in a specific direction (from the matrix into the inter-membrane space in this example).

Source: https://en.wiktionary.org/wiki/vectorial