noun, plural oscula [os-kyuh-luh] .
a small mouthlike aperture, as of a sponge.

1605–15; < Neo-Latin, Latin ōsculum, equivalent to ōs mouth + -culum -cule1

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World English Dictionary
osculum (ˈɒskjʊləm)
n , pl -la
zoology a mouthlike aperture, esp the opening in a sponge out of which water passes
[C17: from Latin: a kiss, little mouth, diminutive of ōs mouth]

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Medical Dictionary

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

The American Heritage® Stedman's Medical Dictionary
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