| natural history |
the scientific study of plants or animals (more observational than experimental) usually published in popular magazines rather than in academic journals
출처: wordnet.princeton.edu/perl/webwn
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| natural |
existing in or produced by nature; not artificial or imitation; "a natural pearl"; "natural gas"; "natural silk"; "natural blonde hair"; "a natural sweetener"; "natural fertilizers" existing in or in conformity with nature or the observable world; neither supernatural nor magical; "a perfectly natural explanation" functioning or occurring in a normal way; lacking abnormalities or deficiencies; "it's the natural thing to happen"; "natural immunity"; "a grandparent's natural affection for a grandchild" (of a key) containing no sharps or flats; (of a note) being neither raised nor lowered by one chromatic semitone; "a natural scale"; "B natural" unthinking; prompted by (or as if by) instinct; "a cat's natural aversion to water"; "offering to help was as instinctive as breathing" (used especially of commodities) being unprocessed or manufactured using only simple or minimal processes; "natural yogurt"; "natural produce"; "raw wool"; "raw sugar"; "bales of rude cotton" someone regarded as certain to succeed; "he's a natural for the job" related by blood; not adopted; "natural parent" being talented through inherited qualities; "a natural leader"; "a born musician"; "an innate talent" a notation cancelling a previous sharp or flat (craps) a first roll of 7 or 11 that immediately wins the stake lifelike: free from artificiality; "a lifelike pose"; "a natural reaction"
출처: wordnet.princeton.edu/perl/webwn
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| natural childbirth |
labor and childbirth without medical intervention; no drugs are given to relieve pain or aid the birth process; "natural childbirth is considered the safest for the baby"
출처: wordnet.princeton.edu/perl/webwn
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| natural immunity |
immunity to disease that occurs as part of an individual's natural biologic makeup
출처: wordnet.princeton.edu/perl/webwn
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| natural selection |
survival: a natural process resulting in the evolution of organisms best adapted to the environment
출처: wordnet.princeton.edu/perl/webwn
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