Summer Institute of Linguistics, 1979. — 391 p.
Mesoamerican languages are the languages indigenous to the Mesoamerican cultural area, which covers southern Mexico, all of Guatemala and Belize and parts of Honduras and El Salvador and Nicaragua. The area is characterized by extensive linguistic diversity containing several hundred different languages and seven major language families. Mesoamerica is also an area of high linguistic diffusion in that long-term interaction among speakers of different languages through several millennia has resulted in the convergence of certain linguistic traits across disparate language families. The Mesoamerican sprachbund is commonly referred to as the Mesoamerican Linguistic Area.The languages of Mesoamerica belong to 6 major families – Mayan, Oto-Mangue, Mixe–Zoque, Totonacan, Uto-Aztecan and Chibchan languages (only on the southern border of the area) – as well as a few smaller families and isolates – Purépecha, Huave, Tequistlatec and Misumalpan. Among these Oto-Manguean and Mayan families account for the largest numbers of speakers by far – each having speakers numbering more than a million. Many Mesoamerican languages today are either endangered or already extinct, but others, including the Mayan languages, Nahuatl, Mixtec and Zapotec, have several hundred thousand speakers and remain viable.