azonal soil

noun

1

: a major soil group often classified as a category of the highest rank and embracing soils that lack well-developed horizons because of immaturity or other factors that have prevented their development compare intrazonal soil, zonal soil

2

: any soil belonging to the azonal soil group (such as the rocky soils on steep slopes)

Word History

First Known Use

1901, in the meaning defined at sense 1

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