action 4
noundomain: natural proc.
Princeton WordNet [ver.3.1]
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EnglishDefinition
a process existing in or produced by nature (rather than by the intent of human beings)
Examples
- 1.volcanic activity
- 2.the action of natural forces
Hypernym
process 6
noun
a sustained phenomenon or one marked by gradual changes through a series of states
EnglishHyponym
radiation 5
noun
the spread of a group of organisms into new habitats
absorption 2
noun
(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium
acidification 1
noun
the process of becoming acid or being converted into an acid
(thermodynamics) any process that occurs without gain or loss of heat
aeration 1
noun
the process of exposing to air (so as to purify)
