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Noun: trial and error
  1. Experimenting until a solution is found
Adjective: trial-and-error
  1. Trying out various means or theories until error is satisfactorily reduced or eliminated
    "he argued that all learning is a trial-and-error process that resembles biological evolution"
     
  2. Relating to solving problems by experience rather than theory
    "they adopted a trial-and-error procedure"

See also: empiric, empirical, heuristic

Type of: experiment, experimentation

Encyclopedia: Trial and error

Trial-and-error