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Pronunciation: o'pen-ing

Definition: A gap in or entrance to an organ, tube, or cavity.

See Also: aperture, fossa, ostium, orifice, pore

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.