This is the 1493rd most frequent French word.
destinées
The French word "destinées" translates to "destinies" or "fates" in English.
In this sentence, 'destinées' is used as an adjective agreeing with 'les lettres', indicating that the letters were meant for the students.
Les lettres destinées aux étudiants ont été envoyées.
The letters addressed to the students were sent.
'destinées' functions as part of a verb phrase, derived from 'être destiné', describing the purpose or intended use of 'ces œuvres'.
Ces œuvres sont destinées à être exposées au musée.
These works are intended to be displayed in the museum.
Here, 'destinées' is used in an existential sense, implying a predestined or intended future for the subject 'elles'.