This is the 12161st most frequent Spanish word.
intervenida
"Intervenida" means "intervened" or "under intervention" in English.
In this sentence, 'intervenida' indicates that an expert took over and carried out the operation. It conveys an action conducted by intervention.
La operación fue intervenida por un cirujano experto.
The surgery was performed by an expert surgeon.
Here, 'intervenido' (masculine form agreeing with 'edificio') suggests that the building has undergone some sort of intervention or action, likely by officials.
El edificio intervenido será restaurado por el gobierno.
The intervened building will be restored by the government.
In this sentence, 'intervenida' implies that the letter was intercepted or stopped by someone during the process, indicating interference.