| natural history |
"Natural history" is an umbrella term for what are now usually viewed as a number of distinct scientific disciplines. Most definitions include the study of living things (e.g. biology, including botany and zoology); other definitions extend the topic to include paleontology, ecology or biochemistry, as well as parts of geology and physics and even meteorology. A person interested in natural history is known as a naturalist. This was predominantly an amateur activity and not an occupation. ...
출처: en.wikipedia.org/wiki/Natural_history
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| natural |
In category theory, an abstract branch of mathematics, a natural transformation provides a way of transforming one functor into another while respecting the internal structure (i.e. the composition of morphisms) of the categories involved. Hence, a natural transformation can be considered to be a "morphism of functors". Indeed this intuition can be formalized to define so called functor categories. ...
출처: en.wikipedia.org/wiki/Natural_(category_theory)
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| natural childbirth |
The natural childbirth technique attempts to minimize medical intervention, particularly anaesthetics, during childbirth. Proponents advocate that anaesthetics may increase the likelihood of complications, because labor may be slowed or the woman may not be able to adequately direct her body to push properly during final delivery. ...
출처: en.wikipedia.org/wiki/Natural_childbirth
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| natural selection |
Natural selection is a process by which biological populations are altered over time, as a result of the propagation of heritable traits that affect the capacity of individual organisms to survive and reproduce. It is one of several mechanisms that give rise to the evolution of biological species (other mechanisms include genetic drift and gene flow. ...
출처: en.wikipedia.org/wiki/Natural_selection
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| natural killer cell |
NK cell. A type of white blood cell that contains granules with enzymes that can kill tumor cells or microbial cells. Also called a large granular lymphocyte.
출처: www.stjude.org/glossary
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