fibra óptica

== Portuguese == === Noun === fibra óptica f (plural fibras ópticas) (European Portuguese spelling) pre-reform spelling (used until 1990) of fibra ótica; still used where the agreement hasn’t come into effect and may occur as a sporadic misspelling == Spanish == === Noun === fibra óptica f (plural fibras ópticas) fibre optics === Further reading === “fibra óptica”, 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