agua pesada

== Spanish == === Noun === agua pesada f (plural aguas pesadas) (chemistry) heavy water (water containing deuterium instead of normal hydrogen) Antonym: agua ligera === Further reading === “agua pesada”, 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