Where does the name Miandrivazo come from?

The town of Miandrivazo in Madagascar is reputed to be the hottest on the island, owing its heat to its recessed geographical position, which is not very windy. A district capital in the Menabe region, it lies 738 km from Toliara, on the banks of the Mahajilo River, a tributary of the Tsiribihina. The town is surrounded by the Bemaraha and Bongolava mountain ranges, and has an average temperature of 28°C.