ostium

play
noun os·ti·um \ˈä-stē-əm\

Definition of ostium

plural

ostia

play \ˈä-stē-ə\
  1. :  a mouthlike opening in a bodily part (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


First Known Use: 1683


Medical Dictionary

ostium

play
noun os·ti·um \ˈäs-tē-əm\

Medical Definition of ostium

plural

ostia

\-tē-ə\play
  1. :  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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