An illegitimate child, a child born to unmarried parents.

plural of law of nature

Steel made by the direct refining of cast iron in a finery, or (as in the case of wootz) by a direct process from the ore.

A childbirth comprising a vaginal delivery without any obstetrical procedures.

anarcho-naturism

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

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.

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

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

(usually of death or dying) Causes such as illness or disease.