naphthalic acid

noun
naph·​thal·​ic acid | \ (ˈ)naf|¦thalik-, ÷ (ˈ)nap| \

Definition of naphthalic acid

1 : a crystalline acid C10H6(COOH)2 formed by oxidation of acenaphthene; 1,8-naphthalene-dicarboxylic acid
2 obsolete : phthalic acid

History and Etymology for naphthalic acid

International Scientific Vocabulary naphthaline + -ic + acid; probably originally formed as French acide naphtalique

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.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More About naphthalic acid

Dictionary Entries Near naphthalic acid

naphthalenoid

naphthalic acid

naphthamine dye

See More Nearby Entries 

Statistics for naphthalic acid

Cite this Entry

“Naphthalic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/naphthalic%20acid. Accessed 6 Oct. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!