noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ˈnæfθəliːn/
/ˈnæpθəliːn/
Southern-England:Recorded audio is listed in the source snapshot.
CMU ARPABET:N AE1 F TH AH0 L IY2 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A white crystalline hydrocarbon manufactured from coal tar; used in mothballs.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
An aromatic bicyclic hydrocarbon, C10H8; an acene containing two fused benzene rings.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
a white crystalline strong-smelling hydrocarbon made from coal tar or petroleum and used in organic synthesis and as a fumigant in mothballs
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: hydrocarbon
History
Etymology
Etymology tree Akkadian napṭumbor.? Old Persian *naftahbor. Ancient Greek νάφθα (náphtha)bor. Latin naphthabor. English naphth(a) English -al French -ènebor. English -ene English naphthalene From naphth(a) + -al + -ene.
Across languages
Translations
32 source translations are retained for this English entry.
Bulgarian:
нафталин
(naftalin)
— white crystalline hydrocarbon
Catalan:
naftalina
— white crystalline hydrocarbon
Chinese Mandarin:
萘
(nài)
— white crystalline hydrocarbon
Czech:
naftalín
— white crystalline hydrocarbon
Esperanto:
naftalino
— white crystalline hydrocarbon
Finnish:
naftaleeni
— white crystalline hydrocarbon
French:
naphtalène
— white crystalline hydrocarbon
German:
Naphthalin
— white crystalline hydrocarbon
Greek:
ναφθαλίνη
(nafthalíni)
— white crystalline hydrocarbon
Hungarian:
naftalin
— white crystalline hydrocarbon
Ido:
naftalino
— white crystalline hydrocarbon
Italian:
naftalina
— white crystalline hydrocarbon
Japanese:
ナフタレン
(nafutaren)
— white crystalline hydrocarbon
Kazakh:
нафталин
(naftalin)
— white crystalline hydrocarbon
Portuguese:
naftalina
— white crystalline hydrocarbon
Russian:
нафтали́н
(naftalín)
— white crystalline hydrocarbon
Spanish:
naftalina
— white crystalline hydrocarbon
Tagalog:
naptalina
— white crystalline hydrocarbon