seal of approval
noun[S]
ukusCOMMERCE
amarkorsymbolon aproductshowingthat it has beentestedby anofficialorganization, and has beenfoundto be of therightstandard:
Firms thatcomplywill beeligiblefor asealofapprovalontheirproducts.
astatementorsignthat someone in animportantpositionapprovesof something:
be given/get a seal of approvalThe newguidelineswere given thesealofapprovalby thedirectorof theIMF.