phosphatidyl

noun

phos·pha·ti·dyl ˌfäs-fə-ˈtī-dᵊl

fäs-ˈfa-tə-dᵊl

: any of several monovalent groups (RCOO)₂C₃H₅OPO(OH) that are derived from phosphatidic acids

Word History

First Known Use

1941, in the meaning defined above

Time Traveler

The first known use of phosphatidyl was in 1941

See more words from the same year

Cite this Entry

Style

“Phosphatidyl.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phosphatidyl. Accessed 18 Jul. 2025.

Copy Citation

Medical Definition

phosphatidyl

noun

phos·pha·ti·dyl ˌfäs-fə-ˈtīd-ᵊl

fäs-ˈfat-əd-ᵊl

: any of several monovalent groups (RCOO)₂C₃H₅OPO(OH) that are derived from phosphatidic acids

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

meritorious

Listen to the pronunciation of meritorious

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 ( • )

Why is '-ed' sometimes pronounced at the end of a word?

Words You Always Have to Look Up

Popular in Wordplay

Ten Painless Ways to Improve Your Vocabulary

How 'Namaste' Entered The English Language

Our Best Historical Slang Terms

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

12 Words Whose History Will Surprise You

Popular

'Affect' vs. 'Effect'

Ten Painless Ways to Improve Your Vocabulary

How 'Namaste' Entered The English Language