ostium secundum

noun
ostium se·​cun·​dum | \ -sə-ˈkən-dəm How to pronounce ostium secundum (audio) \

Medical Definition of ostium secundum

: an opening in the upper part of the developing embryonic interatrial septum corresponding to the foramen ovale of the fetus

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Cite this Entry

“Ostium secundum.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/ostium%20secundum. Accessed 16 Jan. 2021.

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