pars iridica retinae

noun

pars irid·i·ca ret·i·nae -i-ˈrid-i-kə-ˈret-ᵊn-ˌē

: the two deep purple cellular layers of columnar epithelium that cover the posterior surface of the iris of the eye and are continuous with the retina

Browse Nearby Words

pars intermedia

pars iridica retinae

parsley

See all Nearby Words

Cite this Entry

Style

“Pars iridica retinae.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/pars%20iridica%20retinae. Accessed 9 Jul. 2026.

Copy Citation

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

tacit

See Definitions and Examples »

Get Word of the Day daily email!

Popular in Grammar & Usage

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

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

Commonly Misspelled Words

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

Popular in Wordplay

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

One-Word Oxymorons: Bittersweet, Spendthrift, and More

Ten Words Ending with a Silent ‘T’

12 Lovely and Unusual Words for the Natural World

Popular

Is that lie 'bald-faced' or 'bold-faced'?

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List