- 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.spiny-headed worm
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for acanthocephala
The invertebrates: Acanthocephala, Aschelminthes, and Endoprocta.
The life-cycle of Moniliformis moniliformis (Bremser, 1811), Acanthocephala.