lexico-

Etymology tree Proto-Indo-European *leǵ-der. Proto-Indo-European *léǵ-e-ti Proto-Hellenic *légō Ancient Greek λέγω (légō) Proto-Indo-European *-tis Ancient Greek -τις (-tis) Ancient Greek -σῐς (-sĭs) Ancient Greek λέξῐς (léxĭs) Proto-Indo-European *-kos Ancient Greek -κός (-kós) Ancient Greek -ῐκός (-ĭkós) Ancient Greek λεξῐκός (lexĭkós) English lexico- From Ancient Greek λεξικός (lexikós, “of words”), from λέξις (léxis, “a saying, speech, word”), from λέγειν (légein, “to speak”).

来源：wiktionary