: a phylum that comprises the horsehair worms which were formerly often grouped with the nematodes but are distinguished from these by possession of a true body cavity, gonads discontinuous with their ducts, and an atrophied digestive tract in the adult

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“Nematomorpha.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Nematomorpha. Accessed 7 Jul. 2026.

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