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crinoidal

adjective
cri·​noi·​dal | \ (ˈ)krī¦nȯidᵊl, krə̇ˈ-\

Definition of crinoidal

: of or relating to crinoids : consisting of or containing crinoids crinoidal limestone

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First Known Use of crinoidal

1824, in the meaning defined above

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The first known use of crinoidal was in 1824

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