a function word that combines with a noun or pronoun or noun phrase to form a prepositional phrase that can have an adverbial or adjectival relation to some other word
(linguistics) the placing of one linguistic element before another (as placing a modifier before the word it modifies in a sentence or placing an affix before the base to which it is attached)
of a speech expressing leave-taking; "a valedictory address"
of or relating to an occasion or expression of farewell; "a valedictory address"; "valedictory praise for his uniformly manly course"; "a suitable valedictory gesture"
a public instance of reciting or repeating (from memory) something prepared in advance; "the program included songs and recitations of well-loved poems"
(physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons