vitellarium
noun
vi·tel·lar·i·um
ˌvīt-ᵊl-ˈar-ē-əm 
plural vitellaria
-ē-ə
: a modified part of the ovary that in many flatworms and rotifers produces yolk-filled cells serving to nourish the true eggs
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“Vitellarium.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/vitellarium. Accessed 25 Dec. 2024.
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