verbC1Very rare — outside the 30,000 commonest English words, so you will meet it in writing rather than in speech — accreditation sits at #12,978Too rare in one of the two pools to compare — fewer than 20 uses in speech or in writing
Other forms: accredited, accrediting, accredits
To accredit is to recognise officially as meeting a standard. Accredit a course.
It is done by a body with authority, which is what makes it worth anything. To accredit somebody also means to send them officially as a representative.
Definitions of accredit
1verbaccreditTo recognise officially as meeting a standard.C1
“The course was accredited after a two-year inspection.”