ostium

noun os·ti·um \ ˈä-stē-əm \

Definition of ostium

plural ostia play \ˈä-stē-ə\
: a mouthlike opening in a bodily part (such as a fallopian tube or a blood vessel)

Origin and Etymology of ostium

New Latin, from Latin, door, mouth of a river; akin to Latin os mouth — more at oral


Medical Dictionary

ostium

noun os·ti·um \ ˈäs-tē-əm \

medical Definition of ostium

plural ostia play \-tē-ə\
: a mouthlike opening in a bodily part (as a fallopian tube or a blood vessel)
  • stenosis of coronary ostia
  • —R. L. Cecil & R. F. Loeb

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