Teosinte \Te`o*sin"te\, n. (Bot.) A large grass ({Euchl[ae]na luxurians}) closely related to maize. It is native of Mexico and Central America, but is now cultivated for fodder in the Southern United States and in many warm countries. Called also {Guatemala grass}. Guatemala grass \Gua`te*ma"la grass"\ (Bot.) See {Teosinte}.