A childbirth comprising a vaginal delivery without any obstetrical procedures.

plural of natural person

(law) A human being, as opposed to an organization.

A kind of proof calculus in which logical reasoning is expressed by inference rules closely related to the "natural" way of reasoning, in contrast to axiomatic systems.

anarcho-naturism

A philosophy combining anarchist and naturist ideas, such as the abolition of the state, vegetarianism and nudism.

plural of natural economy

(grammar) The gender that a noun, etc. would be expected to have, based on attributes of the referent, such as physical sex.

(economics) An economy in which money is not used in the transfer of resources among people.

(category theory) A natural transformation whose every component is an isomorphism.