aridisol Syllabification: (a·rid·i·sol)Pronunciation: /əˈridiˌsôl, -ˌsäl/Definition of aridisol noun Soil Science a soil of an order comprising typically saline or alkaline soils with very little organic matter, characteristic of arid regions. aridisol in other Oxford dictionaries Definition of aridisol in the British & World English dictionary