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endostracum

noun
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end·​os·​tra·​cum
plural endostraca\ -​kə \

Definition of endostracum

: the inner layer of a shell especially of a crustacean

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History and Etymology for endostracum

New Latin, from end- + Greek ostrakon hard shell; akin to Greek osteon bone

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“Endostracum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/endostracum. Accessed 14 Jul. 2020.

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