arenosol Syllabification: (a·re·no·sol)Pronunciation: /əˈrēnəˌsôl, -ˌsäl/Definition of arenosol noun Soil Science a soil type consisting mainly of sand with very little organic matter and supporting limited amounts of specialized vegetation. Origin: mid 20th century: from Latin arena 'sand' + -solarenosol in other Oxford dictionaries Definition of arenosol in the British & World English dictionary