domain name. A domain name locates an organization or other entity on the Internet. The com part of the domain name reflects the purpose of the organization or entity (in this example, commercial) and is called the top-level domain name.
Xenurus unicinctus-an armadillo native of the tropical parts of South America. Xerus-a type of ground squirrel from Africa Xiphias-a swordfish. Xiphias gladius Xiphosuran-a horseshoe crab. Xoloitzcuintli-a dog Xoni-mystical creature.Xylophone Cat-A cat that is only by legend but some claim to have seen it. Eric Barnes.
Helminths are large, multicellular organisms that are generally visible to the naked eye in their adult stages. Like protozoa, helminths can be either free-living or parasitic in nature. In their adult form, helminths cannot multiply in humans. There are three main groups of helminths (derived from the Greek word for worms) that are human parasites: 1  Flatworms (platyhelminths) â these include the trematodes (flukes) and cestodes (tapeworms). 2  Thorny-headed worms (acanthocephalins) â the adult forms of these worms reside in the gastrointestinal tract.