The Arabic alphabet has ﺭ,ﺭﺍﺀ /rāʔ/, Greek has Ρ,ρ ῥῶ /rhô/ and Latin has R,r. All of these are most likely ultimately derived from the same source, a Sinaitic Semitic proto-alphabet that developed around the first half of the second millennium BC. | The Arabic alphabet has ﺭ,ﺭﺍﺀ /rāʔ/, Greek has Ρ,ρ ῥῶ /rhô/ and Latin has R,r. All of these are most likely ultimately derived from the same source, a Sinaitic Semitic proto-alphabet that developed around the first half of the second millennium BC. |