accreditation

noun

1. (countable, uncountable)The giving of credentials.
2. (countable, uncountable)The act of accrediting.

   “letters of accreditation”

   “Remus Chen, head of Taiwan's Foreign Ministry's Department of European Affairs, told reporters that the new Lithuanian representative Paulius Lukauskas had arrived in Taipei earlier this month, and on Monday had formally applied for his accreditation.”

3. (countable, uncountable)The granting of approval to an institution of higher learning by an official review board after the school has met certain requirements.