“Niemann-Pick”

We have one entry that includes the term Niemann-Pick.

Niemann-Pick disease

noun

: a genetic disease that is marked by the accumulation of phospholipids (such as sphingomyelin) in various tissues typically with enlargement of the spleen, liver, and lymph nodes, and in the more severe forms by progressive neurological deterioration and death

See the full definition

Word of the Day

Listen to the pronunciation of sedentary

See Definitions and Examples »

Test Your Vocabulary

Name That Flower

  • any of a genus helianthus especially h annuus of new world composite plants with large yellow rayed flower heads bearing edible seeds that yield an edible oil
Name That Thing

You know what it looks like… but what is it called?

TAKE THE QUIZ
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.

Pick the best words!

PLAY
Love words? Need even more definitions?

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

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 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?
The Missing Letter A daily crossword with a twist
sequel spelled three ways with the incorrect ways crossed out and the correct spelling circled
Commonly Misspelled Words Vol. 2 Quiz Where are those red squiggly underlines when you ...
See All