Definition, Meaning & Synonyms
ostium
noun
/ˈɒs.ti.əm/
Definition
An opening or entrance, especially to a passage or hollow organ.
Examples
- The ostium of the heart valves regulates blood flow.
- The ostium in the nasal cavity allows air to enter the respiratory system.
Meaning
In anatomy and biology, ostium refers to any opening that allows for the passage of substances into or out of an organ or structure.
Synonyms
- opening
- aperture
- entrance
