ultisol Syllabification: (ul·ti·sol)Pronunciation: /ˈəltəˌsäl, -ˌsôl/Definition of ultisol noun Soil Science a highly weathered leached red or reddish-yellow acid soil with a clay-rich B horizon (subsoil), occurring in warm, humid climates. Origin: 1960s: from ultimate + Latin solum 'soil'ultisol in other Oxford dictionaries Definition of ultisol in the British & World English dictionary
