ecourilor
Ecourilor is the genitive/dative plural form of the Romanian noun ecou, which designates a sound reflected back to the listener or, more broadly, a repetition or reverberation of something. In Romanian, ecou is a masculine noun; its nominative plural is ecouri and its definite plural is ecourile, while ecourilor is used after prepositions or in constructions requiring the genitive/dative case. The form ecourilor therefore appears in phrases such as în urma ecourilor, efectele ecourilor, or ecourilor deciziilor, indicating possession or association with echoes.
In acoustics and signal processing, ecou refers to the phenomenon of a sound wave returning after reflection
Etymology and cognates: ecou derives from the same semantic field as the French écho, with broader roots