(chemistry, geology) any chemical element which occurs in nature uncombined with other elements; includes the atmospheric gases, several metals and semimetals, and the nonmetals sulfur and carbon

(biology) A species that normally lives and thrives in a particular ecosystem. This can include any species that developed with the surrounding habitat, and can be assisted by or affected by a new species.

plural of natural resource

A state of nature; conformity to nature. / The doctrine that denies a supernatural agency in the miracles and revelations recorded in religious texts and in spiritual influences.

(geology) Aluminium metal, rarely found in nature in oxygen deficient environments such as volcanic mud.

(dated) The brolga or Australian crane (Antigone rubicunda, syn. Grus rubicunda).

Having the appearance of nature or realism; lifelike or realistic. / Of or relating to philosophical or methodological naturalism.

(government, politics) A political entity (a state) associated with a particular cultural entity (a nation) and a sovereign territorial unit.

Any of the code names used by NATO to identify Soviet and Chinese military equipment

(US) the fanbase of the Boston Red Sox