Definition of "roundworm" [round•worm]

• See nematode. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The roundworm is the most serious buffalo parasite and in untreated calves the small intestine can get packed with worms to the point of complete occlusion."
• "OK, so they're everywhere, they're huge, and they're spreading the raccoon roundworm, which is blinding and brain damaging everyone!"
• "UK - The health of Great Britain's livestock sector will receive a big boost thanks to a grant to fund research into potential new vaccines for parasitic diseases such as roundworm, tapeworm and fluke."