The forces and processes that produce and control all the phenomena of the material world: the laws of nature. The material world and its phenomena. The world of living things and the outdoors: the beauties of nature. A primitive state of existence, untouched and uninfluenced by civilization or artificiality: couldn't tolerate city life anymore and went back to nature. Theology Humankind's natural state as distinguished from the state of grace. A kind or sort: confidences of a personal nature. The essential characteristics and qualities of a person or thing: "She was only strong and sweet and in her nature when she was really deep in trouble\u201d ( Gertrude Stein). The fundamental character or disposition of a person; temperament: "Strange natures made a brotherhood of ill\u201d ( Percy Bysshe Shelley). The natural or real aspect of a person, place, or thing. See Synonyms at disposition. The processes and functions of the body.