fossa ovalis
noun
fossa oval·is
-ō-ˈva-ləs 
-ˈvā-
-ˈvä-
-ˈvā-
-ˈvä-
1
: a depression in the septum between the right and left atria that marks the position of the foramen ovale in the fetus
Cite this Entry
“Fossa ovalis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/fossa%20ovalis. Accessed 22 Jul. 2025.
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