Vocabulary What does 発展途上国 (はってんとじょうこく, hattentojoukoku) mean? 発展途上国 (はってんとじょうこく, hattentojoukoku) means developing country. Quick factsReadingはってんとじょうこくRomajihattentojoukokuPart of speechnoun 発展途上国はってんとじょうこくhattentojoukokudeveloping country1noun developing countryKanji in this word発emit, issue; depart, set out展expanding, developing; exhibiting途route, way; midway上above, on top; to go up国country, nation