naphth-

combining form
variants: or

naphtho-

less commonly

naphtha-

Definition of naphth-

  1. 1 :  naphtha naphthene naphthyl

  2. 2a :  related to naphthalene :  naphthoic acid naphthoquinone naphthamide —sometimes in names of compounds in which a benzene nucleus has been replaced by a naphthalene nucleus naphthoresorcinol C10H6(OH)2 b :  naphthol naphthoxide

  3. 3a :  containing a naphthalene nucleus fused on one or two sides to one or two other rings naphthacridine naphthopyran naphthadiazine b :  benz- 2 —not used systematically naphthanthracene

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of naphth-

International Scientific Vocabulary, from naphtha & naphthaline


Seen and Heard

What made you want to look up naphth-? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a trip made at another's expense

Get Word of the Day daily email!