Longman Dictionary of Contemporary English homepage

certification

 noun
     
cer‧tif‧i‧ca‧tion
1 [uncountable and countable] an official document that says that someone is allowed to do a certain job, that something is of good quality etc:
We successfully completed the certification for open water diving.
2 [uncountable] the process of giving someone or something an official document that says they are allowed to do a certain job, that something is of good quality etc
certification of
certification of competence
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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