chitinlike
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periostracum — periostracal, adj. /per ee os treuh keuhm/, n., pl. periostraca / keuh/. the external, chitinlike covering of the shell of certain mollusks that protects the limy portion from acids. [1830 40; < NL, equiv. to peri PERI + ostracum a shell < Gk… … Universalium
skeleton — skeletonless, adj. skeletonlike, adj. /skel i tn/, n. 1. Anat., Zool. the bones of a human or an animal considered as a whole, together forming the framework of the body. 2. any of various structures forming a rigid framework in an invertebrate.… … Universalium
