optophoneUK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈɒptəˌfəʊn/US:USA pronunciation: respellingUSA pronunciation: respelling(op′tə fōn′)
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optophoneUK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈɒptəˌfəʊn/US:USA pronunciation: respellingUSA pronunciation: respelling(op′tə fōn′)
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