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endosiphuncle

noun
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en·​do·​siphuncle | \ "+ \

Definition of endosiphuncle

: an inner tube in the calcareous siphuncle of certain fossil cephalopods

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History and Etymology for endosiphuncle

end- + siphuncle

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“Endosiphuncle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/endosiphuncle. Accessed 22 Feb. 2020.

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