trialling

/T R AY1 AE0 L IH0 NG/
verb
  1. 1

    To carry out a series of tests on (a new product, procedure etc.) before marketing or implementing it.

    โ€œThe warning system was extensively trialed before being fitted to all our vehicles.โ€

  2. 2

    To try out (a new player) in a sports team.

    โ€œThe team trialled a new young goalkeeper in Saturday's match, with mixed results.โ€

noun
  1. 1

    The process of running a trial; an experiment or pilot.

  2. 2

    The running of trial races, especially for horses or greyhounds.

Source: https://en.wiktionary.org/wiki/trial, https://en.wiktionary.org/wiki/trialling