noun
: a soil that has passed through the major developmental phases and become relatively stabilized especially to the point that incorporation of organic material is approximately equal to the withdrawal of soluble material by plants
noun
: a soil that has passed through the major developmental phases and become relatively stabilized especially to the point that incorporation of organic material is approximately equal to the withdrawal of soluble material by plants
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012