piedra angular

== Spanish == === Pronunciation === IPA(key): /ˌpjedɾa anɡuˈlaɾ/ [ˌpje.ð̞ɾa ãŋ.ɡuˈlaɾ] Syllabification: pie‧dra an‧gu‧lar === Noun === piedra angular f (plural piedras angulares) cornerstone (a stone forming the base at the corner of a building) (figurative) cornerstone (that which is prominent, fundamental, noteworthy, or central) === Further reading === “piedra angular”, 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