---
tag: EA8S0JHXMP
kind: concept
name: Leaf
sources:
  - wikipedia: en:325802@r1373839425
    locator: Glossary of graph theory, section L
    note: adopted
    mention: wikipedia://en/325802#S08J
    sections: [Summary]
inventory: [MZW2MF00J0]
---

## Summary

A leaf vertex or pendant vertex (especially in a tree) is a vertex whose degree is $1$. A leaf edge or pendant edge is the edge connecting a leaf vertex to its single neighbour.

A leaf power of a tree is a graph whose vertices are the leaves of the tree and whose edges connect leaves whose distance in the tree is at most a given threshold.