Soilless

noun
1.
the portion of the earth’s surface consisting of disintegrated rock and humus.
2.
a particular kind of earth:
sandy soil.
3.
the ground as producing vegetation or as cultivated for its crops:
fertile soil.
4.
a country, land, or region:
an act committed on American soil.
5.
the ground or earth:
tilling the soil.
6.
any place or condition providing the opportunity for growth or development:
Some believe that poverty provides the soil for crime.
noun
1.
the top layer of the land surface of the earth that is composed of disintegrated rock particles, humus, water, and air See zonal soil, azonal soil, intrazonal soil, horizon (sense 4), horizon (sense 5) related adjective telluric
2.
a type of this material having specific characteristics: loamy soil
3.
land, country, or region: one’s native soil
4.
the soil, life and work on a farm; land: he belonged to the soil, as his forefathers had
5.
any place or thing encouraging growth or development
verb
1.
to make or become dirty or stained
2.
(transitive) to pollute with sin or disgrace; sully; defile: he soiled the family honour by his cowardice
noun
3.
the state or result of soiling
4.
refuse, manure, or excrement
verb
1.
(transitive) to feed (livestock) freshly cut green fodder either to fatten or purge them
soil
(soil)
The loose top layer of the Earth’s surface, consisting of rock and mineral particles mixed with decayed organic matter (humus), and capable of retaining water, providing nutrients for plants, and supporting a wide range of biotic communities. Soil is formed by a combination of depositional, chemical, and biological processes and plays an important role in the carbon, nitrogen, and hydrologic cycles. Soil types vary widely from one region to another, depending on the type of bedrock they overlie and the climate in which they form. In wet and humid regions, for example, soils tend to be thicker than they do in dry regions. See more at A horizon, B horizon, C horizon., See illustration at ABC soil.

soil definition

Material on the surface of the Earth on which plants can grow. (See topsoil.)

Note: Soil is produced by the weathering of rocks.