noun, plural os·ti·a [os-tee-uh] /ˈɒs ti ə/.
Words nearby ostium
Origin of ostium
Examples from the Web for ostium
When in consequence of the sealing of the ostium the tube becomes distended with serous fluid it is termed hydrosalpinx.
A probe is then passed into the ostium, and the anterior wall of the sinus is removed with a curette or rongeur forceps.
This will bring the anterior wall of the sinus with its ostium into view.
When it is established the septum primum grows down and meets the endocardial cushions, and so the ostium primum is obliterated.
The porter, who sat in a niche of the entrance-corridor (ostium).Quintus Claudius, Volume 1 of 2|Ernst Eckstein