protocone
noun
pro·to·cone
ˈprōt-ō-ˌkōn 
: the central of the three cusps of a primitive upper molar that in higher forms is the principal anterior and internal cusp
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“Protocone.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/protocone. Accessed 15 Dec. 2024.
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