plural noun
Cryp·​to·​zo·​nia | \ -ōnēə\

Definition of Cryptozonia 

in some classifications
: a division of starfishes having the marginal plates inconspicuous and being nearly equal to the orders Spinulosa and Forcipulata combined opposed to Phanerozonia

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History and Etymology for Cryptozonia

New Latin, from crypt- + Greek zōnē girdle + New Latin -ia

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marked by shyness and lack of polish

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