natural action

Thesaurus

Noun

1.

natural action - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"natural process, action, activityphysical process, process - a sustained phenomenon or one marked by gradual changes through a series of states; "events now in process"; "the process of calcification begins later for boys than for girls"radiation - the spread of a group of organisms into new habitatsabsorption - (physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium; "the absorption of photons by atoms or molecules"acidification - the process of becoming acid or being converted into an acidadiabatic process - (thermodynamics) any process that occurs without gain or loss of heataeration - the process of exposing to air (so as to purify); "the aeration of the soil"antiredeposition - the process of preventing redepositioncapture - any process in which an atomic or nuclear system acquires an additional particlecapture - a process whereby a star or planet holds an object in its gravitational fieldcentrifugation - the process of separating substances of different densities by the use of a centrifugechemical action, chemical change, chemical process - (chemistry) any process determined by the atomic and molecular composition and structure of the substances involvedchromatography - a process used for separating mixtures by virtue of differences in absorbencyconcretion - the formation of stonelike objects within a body organ (e.g., the kidneys)condensation - the process of changing from a gaseous to a liquid or solid stateconvection - (meteorology) the vertical movement of heat or other properties by massive motion within the atmosphereclotting, coagulation, curdling - the process of forming semisolid lumps in a liquiddecay - the process of gradually becoming inferiordemagnetisation, demagnetization - the process of removing magnetizationdesorption - changing from an adsorbed state on a surface to a gaseous or liquid statediffusion - (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentrationdissolution, disintegration - separation into component partsdistillation, distillment - the process of purifying a liquid by boiling it and condensing its vaporsdrift - the gradual departure from an intended course due to external influences (as a ship or plane)effervescence - the process of bubbling as gas escapescataphoresis, dielectrolysis, electrophoresis, ionophoresis - the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anodeecesis, establishment - (ecology) the process by which a plant or animal becomes established in a new habitatextinction - the reduction of the intensity of radiation as a consequence of absorption and radiationextraction - the process of obtaining something from a mixture or compound by chemical or physical or mechanical meansfeedback - the process in which part of the output of a system is returned to its input in order to regulate its further outputfiltration - the process whereby fluids pass through a filter or a filtering mediumflocculation - the process of flocculating; forming woolly cloudlike aggregationsflow - any uninterrupted stream or dischargeformation - natural process that causes something to form; "the formation of gas in the intestine"; "the formation of crystals"; "the formation of pseudopods"fossilisation, fossilization - the process of fossilizing a plant or animal that existed in some earlier age; the process of being turned to stonegeologic process, geological process - (geology) a natural process whereby geological features are modifiedcuring, solidification, solidifying, hardening, set - the process of becoming hard or solid by cooling or drying or crystallization; "the hardening of concrete"; "he tested the set of the glue"inactivation - the process of rendering inactive; "the gene inactivation system"; "thermal inactivation of serum samples"ion exchange - a process in which ions are exchanged between a solution and an insoluble (usually resinous) solid; widely used in industrial processingionisation, ionization - the process of ionizing; the formation of ions by separating atoms or molecules or radicals or by adding or subtracting electrons from atoms by strong electric fields in a gasleach, leaching - the process of leachingmagnetic induction, magnetisation, magnetization - the process that makes a substance magnetic (temporarily or permanently)