Definition

1. Noun:
   • A parasitic worm is a type of worm that lives in or on another living organism (a host), deriving nutrients at the host's expense. These worms are internal parasites, typically infecting the intestines or other organs of vertebrates, including humans and animals.

Usage

• The term parasitic worm is a scientific and medical term used to categorize a group of helminths (worms) that cause parasitic infections.
• It is often used in public health, veterinary medicine, and biology contexts.
• It functions as a countable noun (e.g., , ).

Examples

• Noun:
  • The doctor diagnosed the infection as being caused by a parasitic worm.
  • Poor sanitation can lead to the spread of parasitic worms.
  • The life cycle of a parasitic worm often involves multiple stages.

Advanced Usage

• "Soil-transmitted parasitic worms": A public health term for specific nematodes whose eggs are passed in human feces and contaminate soil in areas with poor sanitation.
  • Mass drug administration is a strategy to control soil-transmitted parasitic worms.

Variants and Related Words

• Helminth (n): The formal scientific term for a parasitic worm.
  • Helminthology is the study of parasitic worms.
• Endoparasite (n): An organism that lives inside its host, a category that includes parasitic worms.
  • Tapeworms are endoparasites.

Different Meanings / Specific Types

The term parasitic worm is an umbrella category. Its primary meaning encompasses several major groups: 1. Roundworms (Nematodes): Cylindrical, unsegmented worms (e.g., Ascaris, hookworms). 2. Tapeworms (Cestodes): Long, flat, segmented worms that live in the intestines (e.g., Taenia). 3. Flukes (Trematodes): Leaf-shaped flatworms (e.g., liver flukes, blood flukes).

Synonyms

• Helminth: (Scientific synonym)
• Intestinal worm: (A common descriptive synonym, though not all parasitic worms are strictly intestinal)

Related Phrases / Collocations

• Parasitic worm infection / infestation: The condition of having parasitic worms in the body.
  • The child was treated for a parasitic worm infestation.
• Burden of parasitic worms: A term used in epidemiology to describe the impact of these infections on a population.
  • The global burden of parasitic worms remains high.

Noun

1. worm that is parasitic on the intestines of vertebrates especially roundworms and tapeworms and flukes