| natural object | an object occurring naturally, not made by man |
| circulation | the spread or transmission of something (as news or money) to a wider group or area |
| 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 | (craps) a first roll of or that immediately wins the stake |
| natural virtue | (scholasticism) one of the four virtues (prudence, justice, fortitude, and temperance) derived from nature |
fetal circulation
foetal circulation | the system of blood vessels and structures through which blood moves in a fetus |
| natural ability | ability that is inherited |
endowment
gift
talent
natural endowment | natural abilities or qualities |
| natural history | the scientific study of plants or animals (more observational than experimental) usually published in popular magazines rather than in academic journals |
law
natural law | a rule or body of rules of conduct inherent in human nature and essential to or binding upon human society |
| natural science | the sciences involved in the study of the physical world and its phenomena |
physics
natural philosophy r | the science of matter and energy and their interactions, his favorite subject was physics |
natural language processing
NLP
human language technology | the branch of information science that deals with natural language information |
| natural theology | a theology that holds that knowledge of God can be acquired by human reason without the aid of divine revelation |
| circulation | the dissemination of copies of periodicals (as newspapers or magazines) |
natural language processor
natural language processing application | an application program that deals with natural language text |
natural logarithm
Napierian logarithm | a logarithm to the base e |
natural
cancel | a notation cancelling a previous sharp or flat |
natural language
tongue | a human written or spoken language used by a community, opposed to e.g. a computer language |
happening
occurrence
occurrent
natural event | an event that happens |
| circulation | free movement or passage (as of cytoplasm within a cell or sap through a plant), ocean circulation is an important part of global climate, a fan aids air circulation |
Royal Society
Royal Society of London for Improving Natural Knowledge | an honorary English society (formalized inand given a royal charter by Charles II in ) through which the British government has supported science |
covering
natural covering
cover | a natural object that covers or envelops, under a covering of dust, the fox was flushed from its cover |
enclosure
natural enclosure | a naturally enclosed space |
natural depression
depression | a sunken or depressed geological formation |
natural elevation
elevation | a raised or elevated geological formation |
| natural order | the physical universe considered as an orderly system subject to natural (not human or supernatural) laws |
spring
fountain
outflow
outpouring
natural spring | a natural flow of ground water |
| natural | someone regarded as certain to succeed, he's a natural for the job |
naturalist
natural scientist | a biologist knowledgeable about natural history (especially botany and zoology) |
| natural phenomenon | all phenomena that are not artificial |
| circulation | movement through a circuit, especially the movement of blood through the heart and blood vessels |
| systemic circulation | circulation that supplies blood to all the body except to the lungs |
| pulmonary circulation | circulation of blood between the heart and the lungs |
| vitelline circulation | circulation of blood between the embryo and the yolk sac |
natural resource
natural resources | resources (actual and potential) supplied by nature |
| 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 process
natural action
action
activity | a process existing in or produced by nature (rather than by the intent of human beings), the action of natural forces, volcanic activity |
survival
survival of the fittest
natural selection
selection | a natural process resulting in the evolution of organisms best adapted to the environment |
| circulation | number of copies of a newspaper or magazine that are sold, by increasing its circulation the newspaper hoped to increase its advertising |
| circulation | (library science) the count of books that are loaned by a library over a specified period |
| natural number | the number and any other number obtained by adding to it repeatedly |
| natural shape | a shape created by natural forces, not man-made |
wild
natural state
state of nature | a wild primitive state untouched by civilization, he lived in the wild, they collected mushrooms in the wild |
natural immunity
innate immunity | immunity to disease that occurs as part of an individual's natural biologic makeup |
| natural glass | magma of any composition that cooled very rapidly |
| natural resin | a plant exudate |
natural fiber
natural fibre | fiber derived from plants or animals |
natural gas
gas | a fossil fuel in the gaseous state, used for cooking and heating homes |
rubber
natural rubber
India rubber
gum elastic
caoutchouc | 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 |