Osculum

[os-kyuh-luh m] /ˈɒs kyə ləm/

noun, plural oscula
[os-kyuh-luh] /ˈɒs kyə lə/ (Show IPA)
1.
a small mouthlike aperture, as of a sponge.
/ˈɒskjʊləm/
noun (pl) -la (-lə)
1.
(zoology) a mouthlike aperture, esp the opening in a sponge out of which water passes

osculum os·cu·lum (ŏs’kyə-ləm)
n. pl. os·cu·la (-lə)
A pore or minute opening.

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