Rho (priflythyren Ρ; llythyren fach ρ) yw'r 17eg lythyren yn yr wyddor Roeg. Yn y system rhifolion Groegaidd, mae ganddi werth o 100.

Eginyn erthygl sydd uchod am iaith. Gallwch helpu Wicipedia drwy ychwanegu ato.

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