>>2634239The description of Operatic Voice does not mean anything. Operatic voices are segmented into 8 different categories that span a limited octave range depending on the role of the character. This is done to make each character's voice distinctive so they can be overheard clearly during a age without vocal amplification.
Your probably thinking of what is known as a wide vocal range, which would allow someone to perform a larger variety of Operatic vocals and thus be able to play more roles. As I recall , Polka mentioned that she recently got her vocal range measured professionally for her idol practice. And she measured a span of 4 octaves.