from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See spiny-headed worm.
from The Century Dictionary and Cyclopedia
- n. One of the Acanthocephala.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of various worms living parasitically in intestines of vertebrates having a retractile proboscis covered with many hooked spines
Response to an avian predator and its isopod prey to an acanthocephalan parasite.