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ostium
[ os-tee-uhm ]
/ ˈɒs ti əm /
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noun, plural os·ti·a [os-tee-uh]. /ˈɒs ti ə/.
Anatomy, Zoology. a small opening or orifice, as at the end of the oviduct.
Zoology. one of the tiny holes in the body of a sponge.
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Origin of ostium
First recorded in 1655–65, ostium is from the Latin word ōstium entrance, river mouth
Words nearby ostium
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use ostium in a sentence
British Dictionary definitions for ostium
ostium
/ (ˈɒstɪəm) /
noun plural -tia (-tɪə) biology
any of the pores in sponges through which water enters the body
any of the openings in the heart of an arthropod through which blood enters
any similar opening
Word Origin for ostium
C17: from Latin: door, entrance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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