#trial_run__trialrun__trial__test__tryout  trying something to find out about it; "a sample for ten days free trial"; "a trial of progesterone failed to relieve the pain"
  supertype:  #experimentation__experiment  the testing of an idea; "it was an experiment in living"; "not all experimentation is done in laboratories"
  subtype:  #field_trial__fieldtrial  a test to display the performance of some new product
  subtype:  #alpha_test__alphatest  a first test of an experimental product (such as computer software) carried out by the developer
  subtype:  #beta_test  a second test of an experimental product (such as computer software) carried out by an outside organization
  subtype:  #road_test  a test to insure that a vehicle is roadworthy
     subtype:  #test_drive  test of the roadworthiness of a vehicle one is considering buying
  subtype:  #trial_balloon__trialballoon  a test of public opinion

No statement uses or specializes #trial_run; click here to add one.