trigésimo

thirtieth

adjective tree-HEH-see-moh Rare

Origin: From Latin tricesimus, from triginta (thirty).

Usage Note

Trigésimo is the formal ordinal for 'thirtieth'; in everyday speech Spaniards and Latin Americans often replace it with the cardinal treinta in contexts like page numbers or floors (la planta treinta instead of la planta trigésima). The feminine form is trigésima. It abbreviates as 30.º / 30.ª.

Examples

"Celebramos el trigésimo aniversario de la empresa."

Natural Translation

We celebrated the thirtieth anniversary of the company.

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