triginta

Triginta is the Latin word for the number thirty. It functions as a cardinal numeral in classical Latin and is used to denote a quantity of thirty. In ordinary prose, triginta accompanies nouns to indicate thirty items or units, as is typical for Latin numerals.

Etymology and cognates: Triginta is formed from the Latin prefix tri- meaning three and a suffix used in numeral formation, analogous to other tens-based numerals such as viginti (twenty) and quadraginta (forty). The word has given rise to the Romance-language words for thirty, including Italian trenta, Spanish treinta, Portuguese trinta, Romanian treizeci, and in many cases the general sense of “thirty” in these languages derives from the Latin form. French trentaine and related forms reflect the same ancient lineage through Vulgar Latin.

Usage notes: In Latin texts, triginta appears as a straightforward numeral and can appear in constructions that express quantity, age, or measurement. While the numeral expresses thirty, its exact grammatical behavior follows the conventions of Latin cardinal numbers, and it can interact with nouns in typical counts and phrases. The corresponding Roman numeral for thirty is XXX, which is a separate convention used in numerals rather than in the written word triginta itself.

In summary, triginta is the classical Latin term for thirty, with direct linguistic ancestors in Romance languages and a long-standing role in Latin numeric expression.