orifice

How to sign: an aperture or hole opening into a bodily cavity
"the orifice into the aorta from the lower left chamber of the heart";

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Similiar / Same: porta, opening

Categories: passage, passageway

Within this category: anus, aortic orifice, blastopore, cardia, cervix, fenestra, fontanelle, introitus, mouth, naris, os, porta hepatis, pylorus, rima, spiracle, stoma, urethral orifice, vent