Growth or movement of a plant or animal toward or away from an external stimulus, such as light, heat, or gravity. tropism. the tendency of a plant, animal, or part to move or turn in response to an external stimulus, as sunlight or temperature. â tropistic, adj.
The definition of a graph is a diagram showing the relationships between two or more things. An example of graph is a pie chart. Graph is defined as to create a diagram that shows a relationship between two or more things. An example of graph is to create a series of bars on graphing paper.
In mathematics, networks are often referred to as graphs, and the area of mathematics concerning the study of graphs is called graph theory. Unfortunately, the term graph can also refer to a graph of a function, but we won't use that use of the term when talking about networks. Here, we'll use the terms network and graph interchangeably. Networks can represent all sorts of systems in the real world.