Definition of "trial-and-error" [trial-and-error]

• Relating to solving problems by experience rather than theory (adjective)
• Trying out various means or theories until error is satisfactorily reduced or eliminated (adjective)

WordNet. Princeton University. 2010.

• "But his evolution as a farmer — with many trial-and-error detours along the way — included extended adventures with bees and sheep."
• "With trial-and-error as their chief strategy, Suitor and the AAC team developed a set of leg braces, weights and belts to compensate for Nichols' steering deficiencies."
• "They are not anxious to commit themselves to a specific career, let alone settle down and start families, and they are easy being looked upon as a trial-and-error generation."