# naphthalene

> English word · Noun · IPA /ˈnæfθəliːn/ · frequency rank #87,599

## Definitions
1. A white crystalline hydrocarbon manufactured from coal tar; used in mothballs.
2. An aromatic bicyclic hydrocarbon, C₁₀H₈; an acene containing two fused benzene rings.

## Etymology
From naphth(a) + -al + -ene.

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