Definition of Goniaster
:a common genus (the type of the family Goniasteridae) of cushion stars consisting of nearly pentagonal, rigid, and often brightly colored starfishes
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Goniaster
noun
Go·ni·as·ter
\
¦gōnē¦astə(r)
\
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Origin and Etymology of goniaster
New Latin, from goni- + -aster
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