What does ascarid mean?
An ascarid is any of a group of large parasitic roundworms belonging to the family Ascarididae. The best-known species is Ascaris lumbricoides, the giant intestinal roundworm of humans, while related species such as Toxocara canis infect dogs and other animals. Ascarids live in the intestines of their hosts, where they feed and reproduce; their eggs are shed in faeces and can contaminate soil, food, or water, allowing new infections to spread, particularly in areas with poor sanitation. Infection with these worms, known as ascariasis, is among the most common parasitic diseases in humans worldwide and is usually treated with antiparasitic medication. The term "ascarid" belongs chiefly to medical, veterinary, and parasitological writing; everyday speech tends to use the broader term "roundworm" instead. Knowing the word is useful for anyone reading about tropical medicine, pet care, or public health.
nounA parasitic roundworm of the family Ascarididae, especially the large intestinal nematode Ascaris lumbricoides, which infects humans and other animals.
- A parasitic roundworm of the family Ascarididae, especially Ascaris lumbricoides, that inhabits the intestines of humans and animals.
"The veterinarian identified ascarids in the puppy's stool sample during the routine examination."
"Public health campaigns in the region focus on deworming children to eliminate ascarids."
"Under the microscope, the veterinarian identified the eggs of an ascarid in the kitten's fecal sample."
Standard plural; commonly used when referring to multiple worms or to the group collectively.
"Deworming treatments effectively eliminate ascarids from infected livestock."
The ascarid Ascaris lumbricoides infects over 800 million people worldwide, making it one of the most common human parasites on Earth.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of ascarid
The word "ascarid" derives from the Greek "askaris," meaning an intestinal worm, via Latin "ascaris." It entered English in the early modern period through scientific and medical usage, alongside related terms such as "Ascaris" (the genus name) and "ascariasis" (the disease it causes). Its root reflects the long history of Greek medical vocabulary in describing parasitic worms.
How ascarid is actually used
"Ascarid" is primarily used in medical, veterinary, and parasitological contexts; general readers are more likely to encounter "roundworm." It is a technical rather than everyday term.
Easily confused with ascarid
"Arid" describes land or climate that is extremely dry, whereas an "ascarid" is a parasitic intestinal roundworm.