Definition:Pendant Vertex

Definition
Let $G$ be a graph.

A vertex $v$ of $G$ is said to be a pendant vertex iff it has degree $1$.

Also known as
A pendant vertex can also be found to be described as an end vertex.

In the context of trees, a pendant vertex is usually known as a terminal node, a leaf node or just leaf.

Some sources render the name as pendent vertex; some purists argue that this is more linguistically accurate.