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)
a program during which well-known people discuss a topic or answer questions telephoned in by the audience; "in England they call a talk show a chat show"