Medical Definition of Ostium secundum

1. A secondary opening appearing in the upper part of the septum primum in the sixth week of embryonic life, just prior to the closure of the interatrial foramen primum. Synonym: ostium secundum, secondary interatrial foramen. (05 Mar 2000)

Lexicographical Neighbors of Ostium Secundum

ostitis
ostium
ostium abdominale tubae uterinae
ostium aortae
ostium appendicis vermiformis
ostium arteriosum
ostium atrioventriculare dextrum
ostium atrioventriculare sinistrum
ostium cardiacum
ostium ileocaecale
ostium internum
ostium of vermiform appendix
ostium pharyngeum tubae auditivae
ostium primum
ostium pyloricum
ostium secundum (current term)
ostium trunci pulmonalis
ostium tympanicum tubae auditivae
ostium ureteris
ostium urethrae internum
ostium uteri internum
ostium uterinum tubae
ostium venae cavae inferioris
ostium venae cavae superioris
ostium venosum cordis
ostler

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