is an umbrella term used to describe a wide range of theories and ideals. One such theory is that nature encapsulates the entirety of the physical realm and reality.Another definition for nature is simply the phenomena which are observed in the natural world such as-plants, animals and other physical features.NATURE: Nature is simply the phenomena which are observed in the natural world such as-plants, animals and other physical features.. No related posts.nother definition for nature is simply the phenomena which are observed in the natural world such as-plants, animals and other physical features. NATURE: Nature is simply the phenomena which are observed in the natural world such as-plants, animals and other physical features..