The Collaborative International Dictionary of English v.0.48:

CPA \CPA\ n.
   a certified public accountant; an accountant certified by the
   state. [acronym]

   Syn: certified public accountant.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

CPA
    n 1: an accountant who has passed certain examinations and met
         all other statutory and licensing requirements of a United
         States state to be certified by that state; "in addition to
         accounting and auditing, CPAs also prepare tax returns for
         individuals and corporations" [syn: certified public
         accountant, CPA]

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "CPA":
   CA, accountant, accountant general, actuary, auditor,
   bank accountant, bank examiner, bookkeeper, calculator,
   certified public accountant, chartered accountant, clerk,
   comptroller, controller, cost accountant, cost keeper, journalizer,
   reckoner, recorder, registrar



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

CPA
       Collaboration Partner Agreement (CPPA, ebXML)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

CPA
       Collaboration Protocol Agreements (ebXML)