ostium

2 ENTRIES FOUND:

os·ti·um

noun \ˈäs-tē-əm\
plural os·tia \-tē-ə\

Definition of OSTIUM

:  a mouthlike opening in a bodily part (as a fallopian tube or a blood vessel)

Origin of OSTIUM

New Latin, from Latin, door, mouth of a river; akin to Latin os mouth — more at oral
First Known Use: 1828

os·ti·um

noun \ˈäs-tē-əm\   (Medical Dictionary)
plural os·tia \-tē-ə\

Medical Definition of OSTIUM

: 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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