From korto (“court”) +‎ -um-.

• IPA^(key): /korˈtumo/

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• Rhymes: -umo
• Syllabification: kor‧tu‧mo
• Hyphenation: kort‧umo

kortumo (accusative singular kortumon, plural kortumoj, accusative plural kortumojn)

1. (law) an appellate or high court

• tribunalo (“a trial court”)