Where does “Mesoamérica” come from?
Mesoamérica (Portuguese) comes from Portuguese América, from New Latin America, from Italian Amerigo, from Proto-Germanic *Amalarīks, from Proto-Germanic Haimarīks, from Proto-Germanic rīks, from Proto-Celtic rīxs, from Proto-Indo-European h₃rḗǵs — to straighten, to right oneself; right; just.
Ancestry of “Mesoamérica”, step by step