Occasionally, the term Middle America is used synonymously with Central America (compare with Middle Africa and Central Africa). In English, the term is uncommonly used as a synonym of the term Mesoamerica (or Meso-America), which generally refers to an ancient culture region situated in Middle America extending approximately from central Mexico to northern Costa Rica. In addition, some residents of the region (e.g., Costa Ricans and Nicaraguans) may be referred to as Meso-Americans or Central Americans but not, however, as Middle Americans, which refers to a particular constituency in the United States.
^ abAugelli, John P. (June 1962). "The Rimland-Mainland Concept of Culture Areas in Middle America". Annals of the Association of American Geographers. pp. 52 (2): 119–129. JSTOR2561309. Mexico, Central America, and the West Indies, to which the term is normally applicable, share a general [geographic] focus .... For some ... "Middle America" refers only to Mexico and Central America; others add the West Indies and, infrequently, even Colombia, Venezuela, and the Guianas. Occasionally, the term "Central America" is used synonymously with "Middle America," and for some German geographers "Mittelamerika" refers to the isthmian territories from Panama to Guatemala.