The Malagasy language, part of the Malayo-Polynesian branch of the Austronesian language family, is divided into three dialect groups, which correspond roughly to three ecological zones in Madagascar. The linguistic variations spoken by these eighteen different ethnic groups are mutually intelligible, with the one exception being the dialect spoken by the Southern Tandroy people. This dialectical and lexographical work represents a complete inventory of the resources available on Malagasy. Because Malagasy society is undergoing a rapid transformation, it is important to offer the public an up-to-date dictionary describing the different dialects of modern Malagasy. Accompanied by an introduction to Malagasy grammar, this bilingual dictionary is the first step toward understanding and approaching Tandroy culture.