Definitions

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

  • noun zoology Any contractile vessel of invertebrates that is not of the nature of a real heart, especially one of those pertaining to the excretory system.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

pseudo- +‎ heart

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Examples

  • Her cardial tubes were muscular, multichambered cylinders that ran from above her hip to the base of her skull, and the knife wound had caused extensive damage to the pseudoheart’s muscle tissue.

    DEBTOR'S PLANET W.R. THOMPSON 2000

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