plural noun
Cor·al·lig·e·na | \-ˈlijənə\

Definition of Coralligena 

: a formerly recognized group more or less equivalent to Anthozoa and comprising coral-forming coelenterates

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History and Etymology for Coralligena

New Latin, from corall- + -gena (neuter plural of -genus -genous)

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to reject or criticize sharply

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