Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun sciences A tube with two ends and an artificial semipermeable membrane in the middle.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From the shape of the tube, which looks like a capital U.

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Examples

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  • Looks like pointy-headed boffins missed the boat here.

    September 2, 2024