Definition of orthoepic in US English:

orthoepic

adjective

  • See orthoepy

    • ‘Axmatova’s pronunciation corresponds with the orthoepic norm to a lesser extent than Pasternak’s.’
    • ‘Good pronunciation is defined not as adherence to some strict orthoepic norm but as a range of variation that nonetheless permits "une communication".’

Pronunciation

orthoepic

/ˌôrTHōˈepik/