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.
A graph is an ordered pair where, 1  V is the vertex set whose elements are the vertices, or nodes of the graph. 2  This set is often denoted or just. 3  E is the edge set whose elements are the edges, or connections between vertices, of the graph.