English to English

noun (n)

• the testing of an idea(noun.cognition)

  Example:
  Not all experimentation is done in laboratories.
  

  Synonym:
  experiment
  

  source: wordnet30
• the act of conducting a controlled test or investigation(noun.act)

  source: wordnet30
• The act of experimenting; practice by experiment.(noun)

  source: webster1913