See Also: ostium(dictionary)
ostium(medicine)
ostium ureteris(medicine)
ostium secundum(medicine)
ostium pyloricum(medicine)
ostium primum(medicine)
ostium uteri(medicine)
ostium internum(medicine)
ostium ileocaecale(medicine)
ostium cardiacum(medicine)

ostium (iou)



ostium noun. . E17.
[Latin = door, opening, river mouth.]
The mouth of a river. Only in 17.
Anatomy & Zoology. An opening into a vessel or cavity of the body (also in mod. Latin names of particular openings); in arthropods, each of the slits or valves by which the heart opens to the body cavity; in sponges, an inhalant opening. E19.
Journal of Pediatrics At open-heart surgery..ostium primum and secundum defects were corrected.