acon·ti·um | \ ə-ˈkän-chē-əm \
plural acontia\ ə-ˈkän-chē-ə \ or acontiums
Definition of acontium
: one of the free threads continued from the lower ends of the septa of certain actinians, histologically similar to cnidoglandular bands, protruding through the mouth when the animal contracts, and probably defensive
Keep scrolling for more
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors
- Why is there a 'd' in 'fridge' but not in 'refrigerator'?
- 'All Intensive Purposes' or 'All Intents and Purposes'?
- Is Singular 'They' a Better Choice?
- Name that Thing: Dog Breeds Take the quiz
- Words You Should Know Quiz, Vol. 1 Take the quiz
- True or False? Take the quiz
- SCRABBLE® Sprint Play the game