Longman Dictionary of Contemporary English homepage

experimental

 adjective
     
ex‧per‧i‧men‧tal W3
1 used for, relating to, or resulting from experiments
experimental evidence/results/data
A hypothesis is tested by finding experimental evidence for it.
experimental work/studies
experimental studies on birds and animals
experimental animals
2 using new ideas or methods:
an experimental theatre group
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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