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 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" ;

natural covering

a natural object that covers or envelops; "under a covering of dust"; "the fox was flushed from its cover" ;

natural depression

a sunken or depressed geological formation ;

natural elevation

a raised or elevated geological formation ;

natural enclosure

a naturally enclosed space ;

natural endowment

natural abilities or qualities ;

natural event

an event that happens ;

natural family planning

any of several methods of family planning that do not involve sterilization or contraceptive devices or drugs; coitus is avoided during the fertile time of a woman's menstrual cycle ;

natural fiber

derived from plants or animals ;

natural fibre

derived from plants or animals ;

natural gas

a fossil fuel in the gaseous state; used for cooking and heating homes ;

natural glass

magma of any composition that cooled very rapidly ;

natural history

the scientific study of plants or animals (more observational than experimental) usually published in popular magazines rather than in academic journals ;

natural immunity

immunity to disease that occurs as part of an individual's natural biologic makeup ;

natural language

a human written or spoken language used by a community; opposed to e.g. a computer language ;

natural language processing

the branch of information science that deals with natural language information ;

natural language processing application

an application program that deals with natural language text ;

natural language processor

an application program that deals with natural language text ;

natural law

a rule or body of rules of conduct inherent in human nature and essential to or binding upon human society ;

natural logarithm

a logarithm to the base e ;

natural number

the number 1 and any other number obtained by adding 1 to it repeatedly ;

natural object

an object occurring naturally; not made by man ;

natural order

the physical universe considered as an orderly system subject to natural (not human or supernatural) laws ;

natural phenomenon

all phenomena that are not artificial ;

natural philosophy

the science of matter and energy and their interactions ;

natural process

a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity" ;

natural resin

a plant exudate ;

natural resource

resources (actual and potential) supplied by nature ;

natural resources

resources (actual and potential) supplied by nature ;

natural rubber

an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products ;

natural science

the sciences involved in the study of the physical world and its phenomena ;

natural scientist

a biologist knowledgeable about natural history (especially botany and zoology) ;

natural selection

a natural process resulting in the evolution of organisms best adapted to the environment ;

natural shape

a shape created by natural forces; not man-made ;

natural spring

a natural flow of ground water ;

natural state

a wild primitive state untouched by civilization; "he lived in the wild"; "they collected mushrooms in the wild" ;

natural theology

a theology that holds that knowledge of God can be acquired by human reason without the aid of divine revelation ;

natural virtue

(scholasticism) one of the four virtues (prudence and justice and fortitude and temperance) derived from nature ;

naturalisation

changing the pronunciation of a borrowed word to agree with the borrowers' phonology; "the naturalization in English of many Italian words" ; the introduction of animals or plants to places where they flourish but are not indigenous ; the proceeding whereby a foreigner is granted citizenship ; the quality of being brought into conformity with nature ;