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TAKE THE QUIZtruncus arteriosus
noun
truncus ar·te·ri·o·sus
-är-ˌtir-ē-ˈō-səs
: the part of the embryonic arterial system which develops into the ascending aorta and the pulmonary trunk
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Merriam-Webster unabridged
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- Before we went to her house, Hannah told us her aunt was a flibbertigibbet.


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