acontium

noun acon·ti·um \ ə-ˈkän-chē-əm \

Definition of acontium

plural acontia \ə-ˈkän-chē-ə\ or acontiums
zoology
: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

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Origin and Etymology of acontium

New Latin, from Greek akontion javelin, diminutive of akont-, akōn


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