Biology and Anatomy. In various animals and plants: a bladder or sac filled with air or gas, as those in floating algae.
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| 释义 | the world > animals > animal body > general parts > [noun] > part for swimming or floating (5) air bladder1770 Biology and Anatomy. In various animals and plants: a bladder or sac filled with air or gas, as those in floating algae. swimmer1816 A swimming organ of an animal; esp. an anal appendage in certain aquatic insect larvæ. (Cf. swimmeret, n.) float1832 A floating appliance for supporting something in the water. A hollow or inflated part or organ that supports an animal in the water. Hence used in… swimming-bell1861 a bell-shaped part or organ, as a nectocalyx, by which an animal propels itself through the water. float-bladder1866 (see sense 8c). |
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