ostium

ostium definition - medical

os·ti·um (ŏsˈtē-əm)

noun pl. os·ti·a (-tē-ə)
A small opening or orifice, as in a body organ.

Related Forms:

  • osˈti·al adjective

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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