Definitions for "Leaf node"
Keywords:  node, graph, outgoing, tree, children
A node that contains data records.
Leaf nodes are tree nodes that do not have branches. Leaf nodes cannot have child nodes.
A node in a tree that has exactly one connecting edge. In particular, in a directed tree a leaf node has no outgoing edges and exactly one incoming edge. See Also Directed, Tree.
Keywords:  emerges, stem, point
The point at which a leaf emerges from the stem.
Keywords:  array, string, single, containing
an array containing a single string