Definition:Arrow


 * Category Theory:
 * Arrow:
 * Arrow Functor
 * Arrow Category


 * Graph Theory:
 * Edge of Graph
 * Arc of Digraph


 * Topology:
 * Arrow Topology


 * Logic:
 * Quine Arrow: The symbol used to denote the logical NOR operation


 * Linear Algebra and Physics:
 * Another name for a vector, particularly when rendered $\vec x$