Chorion

7 lettersnounrare

Updated June 2026

Definition

The outermost protective membrane enclosing the embryo in reptiles, birds, and mammals.

“The chorion plays a critical role in nutrient and gas exchange between mother and embryo.”

Pronunciation

Syllables

cho·ri·on

Related Words

Synonyms

outer membranefetal membrane

Word Game Tips

🟩

Wordle

CH start and -ION ending, four vowels in seven letters, the ORI sequence runs through the middle

🔤

Scrabble

Four vowels help clear a vowel-heavy rack, moderate point value for a specialist term

Words Related to Chorion

Words you can make from Chorion

Shorter words formed from the letters in “chorion”.

chino chiro choir chron conor corin corno croon honor ichor incor noric ochro orcin orion rhino rinch ronco chin chon cion coho coin coir

Explore Similar Words

7-letter words starting with C 7-letter words ending with N All 7-letter words 6-letter words 8-letter words All word lists

Try These Tools

Anagram Solver Scrabble Helper Crossword Solver Spelling Bee Solver

Dictionary References

Look up chorion in an authoritative dictionary for full definitions, pronunciation, and etymology.

Cambridge Dictionary Merriam-Webster

Download Word Challenge for unlimited word puzzles, a fresh Daily Challenge, and head-to-head multiplayer. Guess the hidden word in six tries or fewer!

Download Free