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Any of various nematode worms of the order Ascaridida, especially those in the superfamily Ascaridoidea, including the common intestinal parasite Ascaris lumbricoides.

[ Sing. of ascarides, intestinal worms, from Middle English, from Medieval Latin ascaridēs, pl. of ascaris, from Greek askaris.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈæskərɪd) or


(Zoology) any parasitic nematode worm of the family Ascaridae, such as the common roundworm of man and pigs
[C14: from New Latin ascaridae, from Greek askarides, plural of askaris]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈæs kə rɪd)

any parasitic roundworm of the family Ascaridae.
[< New Latin Ascaridae. See ascaris, -id2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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We conducted a review of the literature to investigate previous descriptions of abnormalities in the morphology of intestinal helminth eggs, with particular reference to ascarids. Matuda summarized the findings of early investigators discussing abnormal forms of A.
When the topic of intestinal parasites comes up, people immediately think of worms, such as roundworms (ascarids) and tapeworms.
Parasites of captive individuals included ascarids (Heterakis species and other morphotypes), capillarids, oxyurids, strongyles, a trematode, and protozoans (Eimeria species, Isospora species, Caryospora species, and Entamoeba species).
Wherever worms are in the animal's body, they will always cause problems in many ways, including reducing the blood level in the body thereby causing anaemia, damaging tissues, disrupting normal body function as happens with lungworms in the lungs and competing for food with the host as happens with ascarids. Depending on the degree of the effects of the worms, animals fail to thrive, some become infertile and others will even abort due to inability to feed the growing foetus.
Various parasites, such as large and small strongyles and ascarids, have proven to be problematic in the horse industry [5].
The probable reasons of higher prevalence among GIT parasites may include: (a) resilience, (b) joint grazing of adults with foals, and (c) season and husbandry providing favorable environment for growth of ascarids.
A previous diagnosis following coprological analyses in both cats had indicated an infection sustained by ascarids and the animals had been treated by practitioners with milbemycine oxime and praziquantel (2mg/kg bw and 5mg/kg bw, resp., PO, single administration).
Although a range of nematodes from ascarids and hookworms to strongylids can invade the eyes, most reported cases of ocular nematode infections have been caused by the filariae which can infect the eyelids, lacrimal glands, conjunctival sacs, orbit, or ocular globe.
Ascarids, more commonly known as roundworms, are the most frequently detected parasite in dogs.
The CRD pointed to a higher concentration of Ascarids' eggs in 100% of positive samples, followed by cysts of Giardia sp.
The humans become infected with ascarids and other parasitic diseases through ingestion of infective eggs in the environment.