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Definition of Trial and error
1. Noun. Experimenting until a solution is found.
Medical Definition of Trial and error
1. The apparently random, haphazard, hit-or-miss exploratory activity which often precedes the acquisition of new information or adjustments; it may be overt, as in a rat running in a maze, or covert (vicarious), as when one thinks of various ways of coping with a situation. (05 Mar 2000)