How To Spell RAPIO?
Correct pronunciation for the word "RAPIO" is [ɹˈapɪˌə͡ʊ], [ɹˈapɪˌəʊ], [ɹ_ˈa_p_ɪ__ˌəʊ].
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Usage over time for RAPIO:
This graph shows how "RAPIO" have occurred between 1800 and 2008 in a corpus of English books.