Longman Dictionary of Contemporary English homepage

experimentation

 noun
     
ex‧pe‧ri‧men‧ta‧tion [uncountable]
1 the process of testing various ideas, methods etc to find out how good or effective they are
experimentation with/in
experimentation with computer-assisted language learning
2 the process of performing scientific tests to find out if a particular idea is true or to obtain more information:
The issue of animal experimentation is an emotive subject.
3 when you try doing something to find out what it feels like, for example having sex or using illegal drugs
experimentation with
experimentation with cannabis
There is often a period of sexual experimentation during adolescence.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
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