spin·y-head·ed worm (sp  n -h d  d)n. Any of various worms of the phylum Acanthocephala that live parasitically in the intestines of vertebrates and are characterized by a cylindrical, retractile proboscis that bears many rows of hooked spines. Also called acanthocephalan. |
| spiny-headed worm (spn-hdd) See acanthocephalan. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  spiny-headed worm - any of various worms living parasitically in intestines of vertebrates having a retractile proboscis covered with many hooked spinesworm - any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae Acanthocephala, phylum Acanthocephala - phylum or class of elongated wormlike parasites that live in the intestines of vertebrates: spiny-headed worms |
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