myEtymology.com: Greek etymology of prologos

Etymology of the Greek word prologos (πρόλογος)

the Greek word prologos, πρόλογος

derived from the Greek word logos, λόγος (word, speech, topic, treatise, reasoning)

derived from the Greek word legein, λέγω (to speak)

derived from the Proto-Indo-European root *leg- (to collect, to speak)

using the Greek prefix pro-, προ- (before)