# triangulene

> English word · Noun

## Definitions
1. A flat hydrocarbon graphene fragment, C₂₂H₁₂, composed of six fused benzene rings in a triangular configuration; being a radical having two unpaired electrons.
2. The functional group composed of such a structure, an unsubstituted triangulene.
3. A compound incorporating the functional group, a substituted triangulene.

## Etymology
From triangular + -ene (“benzenoid/graphene”). From being a triangle composed of benzene rings.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/triangulene