As a Noun: 1. A scientific test which is done in order to prove or discover something. English = experiment. 2. The trying out of a new idea or method to see what effect it has. English = experiment. As a Verb or Adjective: 1. To carry out a scientific test in order to prove or discover something or to try out a new idea or method in order to see what happens. English = experiment. 2. Of an action or situation, to happen or be set up as an experiment. English = (be) experimental.