lat

The word 'lat' is a modern loanword, entering English directly from Latvian in the 20th century following Latvia's independence. It originates from "Latvija," the name of the country, making the currency's name essentially mean "of Latvia." The term reflects the common practice of naming national currencies after the country itself or a central figure. As a simplex, it carries the complete concept of the monetary unit without internal morphological structure, its meaning defined entirely by its historical and economic context.

This is a simplex word. It is a direct borrowing from Latvian "lats," which itself is a shortened form of "Latvija," the name of the country, Latvia. Its functional role is as a proper noun adopted as a common noun for currency.