katabasis /kəˈtabəsɪs 
/ ▸ noun (plural katabases /kəˈtabəsiːz/) rare 1 (in classical mythology and literature) a descent into the underworld. 2 a military retreat (with reference to that of the Greeks from Asia under Xenophon, as narrated in his work the Anabasis). – ORIGIN Greek, from kata ‘down’ + basis ‘going’.
EnglishOxford Dictionary of English
