出典:Wiktionary
出典:『Wiktionary』 (2025/12/15 18:37 UTC 版)
osculum (plural oscula)
From ōs (“mouth”) + -culum (diminutive suffix).
ōsculum n (genitive ōsculī); second declension
Second-declension noun (neuter).
| singular | plural | |
|---|---|---|
| nominative | ōsculum | ōscula |
| genitive | ōsculī | ōsculōrum |
| dative | ōsculō | ōsculīs |
| accusative | ōsculum | ōscula |
| ablative | ōsculō | ōsculīs |
| vocative | ōsculum | ōscula |
出典:Wikipedia
出典:『Wikipedia』 (2011/05/09 18:17 UTC 版)
The osculum is an excretory structure in the living sponge, a large opening to the outside through which the current of water exits after passing through the spongocoel. Wastes diffuse into the water and the water exits through the osculum at a velocity of nearly 8.4 cm/second, carrying away with it the sponge's wastes. The size of the osculum is regulated by the myocyte. Its size, in turn, determines the amount of water flowing through the sponge.