adjective
1.
a. : publicly sanctioned or recognized
take it as a personal insult if any of their neighbors break away from accredited custom — W.R.Inge
b. : officially authorized or recognized : provided with credentials
an accredited war correspondent
accredited observers at the United Nations
c. : accepted as valid or authoritative
theories in keeping with the accredited science of the day
2. : officially vouched for or guaranteed as conforming to a prescribed or desirable standard
an accredited hospital
as
a. of an educational institution : approved by an accrediting agency
an accredited college
b. of livestock : guaranteed as free from a usually specified disease
an accredited herd