nuclear sap

noun

: the clear homogeneous ground substance of a cell nucleus

Word History

First Known Use

1887, in the meaning defined above

Time Traveler

The first known use of nuclear sap was in 1887

See more words from the same year

Cite this Entry

Style

“Nuclear sap.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nuclear%20sap. Accessed 21 Jul. 2025.

Copy Citation

Medical Definition

nuclear sap

noun

-ˈsap

: the clear homogeneous ground substance of a cell nucleus

called also karyolymph

More from Merriam-Webster

Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.

Can you solve 4 words at once?

Can you solve 4 words at once?

Word of the Day

hubris

Listen to the pronunciation of hubris

See Definitions and Examples »

Get Word of the Day daily email!

Popular in Grammar & Usage

'Affect' vs. 'Effect'

More Words You Always Have to Look Up

Using Bullet Points ( • )

Words You Always Have to Look Up

Democracy or Republic: What's the difference?

Popular in Wordplay

Ten Painless Ways to Improve Your Vocabulary

How 'Namaste' Entered The English Language

Our Best Historical Slang Terms

Better Ways to Say 'This Sucks'

8 Words with Fascinating Histories

Popular

'Affect' vs. 'Effect'

Ten Painless Ways to Improve Your Vocabulary

How 'Namaste' Entered The English Language