pachyonychia

noun

pachy·​o·​nych·​ia ˌpak-ē-ō-ˈnik-ē-ə How to pronounce pachyonychia (audio)
: extreme usually congenital thickness of the nails

Browse Nearby Words

pachynema
pachyonychia
pachytene
See all Nearby Words

Cite this Entry

“Pachyonychia.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/pachyonychia. Accessed 12 May. 2025.

Copy Citation

Share

Love words? Need even more definitions?

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

Popular in Grammar & Usage

See More

'Affect' vs. 'Effect'

Words You Always Have to Look Up

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Democracy or Republic: What's the difference?

Every Letter Is Silent, Sometimes: A-Z List of Examples
See More

Popular in Wordplay

See More

Flower Etymologies For Your Spring Garden

Great Big List of Beautiful and Useless Words, Vol. 1

Rare and Amusing Insults, Volume 3

'Za' and 9 Other Words to Help You Win at SCRABBLE

8 Words for Lesser-Known Musical Instruments
See More

Popular

See More

'Affect' vs. 'Effect'

Flower Etymologies For Your Spring Garden

Great Big List of Beautiful and Useless Words, Vol. 1
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Word Game Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A daily crossword with a twist
crayons-in-a-circle
Guess the Color Quiz Questions that use the whole box of crayons.
See All