natural action

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a process existing in or produced by nature (rather than by the intent of human beings)
- the action of natural forces
- volcanic activity
• Syn:
natural process, action, activity
• Derivationally related forms:
active (for: activity)
• Hypernyms:
process, physical process
• Hyponyms:
radiation, absorption, acidification, adiabatic process, aeration,
antiredeposition, capture, centrifugation, chemical process, chemical change, chemical action,
chromatography, concretion, condensation, convection, curdling, clotting,
coagulation, decay, demagnetization, demagnetisation, desorption, diffusion,
dissolution, disintegration, distillation, distillment, drift, effervescence,
electrophoresis, cataphoresis, dielectrolysis, ionophoresis, establishment, ecesis,
extinction, extraction, feedback, filtration, flocculation, flow,
formation, fossilization, fossilisation, geological process, geologic process, hardening,
solidifying, solidification, set, curing, inactivation, ion exchange,
ionization, ionisation, leach, leaching, magnetization, magnetisation,
magnetic induction, materialization, materialisation, nuclear reaction, opacification, oscillation,
oxygenation, pair production, pair creation, pair formation, phase change, phase transition,
state change, physical change, precession of the equinoxes, release, saltation, scattering,
sericulture, sink, soak, soakage, soaking, softening,
sorption, source, stiffening, rigidifying, rigidification, stimulation,
succession, ecological succession, survival, survival of the fittest, natural selection, selection,
synergy, synergism, temperature change, transduction, transpiration, vitrification