trienio

== Galician == === Etymology === From Latin triennium. === Noun === trienio m (plural trienios) triennium; period of three years ==== Related terms ==== trienal == Spanish == === Noun === trienio m (plural trienios) triennium; period of three years ==== Related terms ==== === Further reading === “trienio”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025