| soil conservation | protection of soil against erosion or deterioration |
| soil pipe | drain that conveys liquid waste from toilets, etc. |
constant
constant quantity
invariable | a quantity that does not vary |
law of constant proportion
law of definite proportions | (chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight |
typewriter font
constant-width font
fixed-width font
monospaced font | a typeface is which each character is given the same width (as by a typewriter) |
| Free Soil Party | a former political party in the United States, formed in to oppose the extension of slavery into the territories, merged with the Liberty Party in |
| territory soil | the geographical area under the jurisdiction of a sovereign state, American troops were stationed on Japanese soil |
| soil profile | a vertical section of soil from the ground surface to the parent rock |
| soil horizon | a layer in a soil profile |
| land ground soil | material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use), the land had never been plowed, good agricultural soil |
Lambert
Constant Lambert
Leonard Constant Lambert | English composer and conductor (-) |
| soil bank | land retired from crop cultivation and planted with soil-building crops, government subsidies are paid to farmers for their retired land |
| soil erosion | the washing away of soil by the flow of water |
| constant | a number representing a quantity assumed to have a fixed value in a specified mathematical context, the velocity of light is a constant |
| Boltzmann's constant | constant used in the calculation of the ideal gas constant |
| cosmological constant | an arbitrary constant in the equations of general relativity theory |
| equilibrium constant | (chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction) |
| dissociation constant | the equilibrium constant for a reversible dissociation |
gas constant
universal gas constant
R | (physics) the universal constant in the gas equation: pressure times volume R times temperature, equal to . joules per kelvin per mole |
gravitational constant
universal gravitational constant
constant of gravitation
G | (physics) the universal constant relating force to mass and distance in Newton's law of gravitation |
Hubble's constant
Hubble constant
Hubble's parameter
Hubble parameter | (cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer, the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today |
Planck's constant
h | the constant of proportionality relating the energy of a photon to its frequency, approximately . x ^- joule-second |
factor of proportionality
constant of proportionality | the constant value of the ratio of two proportional quantities x and y, usually written y kx, where k is the factor of proportionality |
rydberg
rydberg constant
rydberg unit | a wave number characteristic of the wave spectrum of each element |
| time constant | the ratio of the inductance of a circuit in henries to its resistance in ohms |
dirt
filth grime
soil
stain
grease
grunge | the state of being covered with unclean things |
regur
regur soil | a rich black loam of India |
residual soil
residual clay | the soil that is remaining after the soluble elements have been dissolved |
topsoil
surface soil | the layer of soil on the surface |
| alluvial soil | a fine-grained fertile soil deposited by water flowing over flood plains or in river beds |
| bog soil | poorly drained soils on top of peat and under marsh or swamp vegetation |
| chernozemic soil | a rich black loam of Russia |
desert soil
desertic soil | a type of soil that develops in arid climates |
| soil dirt | the part of the earth's surface consisting of humus and disintegrated rock |
| soil conditioner | a chemical substance used to improve the structure of the soil and increase its porosity, gypsum can be used as a soil conditioner |
| night soil | human excreta used as fertilizer |
| gilgai soil | soil in the melon holes of Australia |
gumbo
gumbo soil | any of various fine-grained silty soils that become waxy and very sticky mud when saturated with water |
leaf mold
leaf mould
leaf soil | soil composed mainly of decaying leaves |
podzol
podzol soil
podsol
podsol soil
podsolic soil | a soil that develops in temperate to cold moist climates under coniferous or heath vegetation, an organic mat over a grey leached layer |
| prairie soil | a type of soil occurring under grasses in temperate climates |
| tundra soil | a black mucky soil with a frozen subsoil that is characteristic of Arctic and subarctic regions |
| time constant | (electronics) the time required for the current or voltage in a circuit to rise or fall exponentially through approximately per cent of its amplitude |
| solar constant | the rate at which radiant solar energy is received at the outer layer of the earth's atmosphere |
dirty
soil
begrime
grime
colly
bemire | make soiled, filthy, or dirty, don't soil your clothes when you play outside! |
| constant | steadfast in purpose or devotion or affection, a man constant in adherence to his ideals, a constant lover, constant as the northern star |
ceaseless
constant
incessant
never-ending
perpetual
unceasing
unremitting | uninterrupted in time and indefinitely long continuing, the ceaseless thunder of surf, in constant pain, night and day we live with the incessant noise of the city, the never-ending search for happiness, the perpetual struggle to maintain standards in a democracy, man's unceasing warfare with drought and isolation, unremitting demands of hunger |
free-soil
slaveless
non-slave | where slavery was prohibited, a free-soil state |
| soil-building | (of crops) planted to improve the quality of the soil |
changeless
constant
invariant unvarying | unvarying in nature, maintained a constant temperature, principles of unvarying validity |