remplacées

Remplacées is the feminine plural past participle of the French verb remplacer, which means to replace or substitute. The verb’s participle forms are remplacé (masculine singular), remplacée (feminine singular), remplacés (masculine plural), and remplacées (feminine plural). As a participle, it agrees in gender and number with the noun it describes or with a preceding direct object in certain tenses.

In standard usage, remplacer is conjugated with the auxiliary avoir in compound tenses. The past participle usually does not agree with the subject, but it agrees with a preceding direct object. For example: J’ai remplacé les pièces (no agreement, since les pièces follows the verb). By contrast: Les pièces que j’ai remplacées ont été testées (the feminine plural direct object les pièces precedes the participle, so it becomes remplacées). In the passive voice, the past participle agrees with the subject: Les pièces ont été remplacées.

Remplacées can also function as a plain adjective describing something that has already been replaced: des pièces remplacées, des composants remplacées (when the noun is feminine plural). In this use, it follows the noun or appears in a phrase like “pièces remplacées” without a preceding direct object rule.

Summary: remplacées is a gender- and number-sensitive form used mainly as a past participle in compound tenses with avoir, as part of passive constructions, or as an attributive adjective referring to items that have been replaced. Related forms (remplacé, remplacée, remplacés) reflect the same root with appropriate agreement.