Hypertext Webster Gateway: "clypeastroid"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Clypeastroid \Clyp`e*as"troid\, a. [NL. Clypeaster (L. clupeus
shield + aster star) + -oid.] (Zo["o]l.)
Like or related to the genus {Clupeaster}; -- applied to a
group of flattened sea urchins, with a rosette of pores on
the upper side.
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