κατεύθυνση

Etymology: From Ancient Greek κατευθύνω (kateuthynō), composed of κατά (kata, 'down, according to') + εὐθύνω (euthynō, 'to straighten, direct'). The root εὐθύς (euthys) meaning 'straight, direct' gives us English words like 'euthanasia' (straight/good + death) and appears in scientific terms like 'eutherian' (true mammals).