Worm — A worm is a common name given to a diverse group of invertebrate animals that have a long, soft body and no legs. There are hundreds of thousands of species of worms, 2,700 of these are earthworms. Animals which are commonly called worms include… … Wikipedia
worm — wormer, n. wormlike, wormish, adj. /werrm/, n. 1. Zool. any of numerous long, slender, soft bodied, legless, bilaterally symmetrical invertebrates, including the flatworms, roundworms, acanthocephalans, nemerteans, gordiaceans, and annelids. 2.… … Universalium
aschelminth — [ask′hel minth] n. in some systems of classification, any of a phylum (Aschelminthes) of wormlike animals, including rotifers, gastrotrichs, gordian worms, and nematodes: these animals are usually considered to be in separate phyla * * * ▪ former … Universalium
animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… … Universalium
Aschelminthes — См. aschelminths … Dictionary of invertebrate zoology
gastrotrich — gastrotrichan /gas tro tri keuhn/, adj. /gas treuh trik/, n. any of the microscopic, multicellular animals of the class or phylum Gastrotricha, of fresh or salt waters, characterized by bands of cilia on the ventral surface of the bottle shaped… … Universalium
horsehair worm — any long, slender worm of the phylum Nematomorpha, developing parasitically on insects and crustaceans, and free living as adults in streams and ponds. Also called gordian worm, nematomorph. [1745 55] * * * or hairworm or gordian worm Any of… … Universalium
lobopod — ▪ animal collective name for two phyla of animals: Onychophora (velvet worm) and Tardigrada (tardigrade). Phyla Onychophora and Tardigrada have long been considered separate from their close arthropod relatives. Both groups have similar… … Universalium
reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… … Universalium
pseudocoelomate — pseu·do·coe·lom·ate .süd ō sē lə .māt adj having a body cavity that is a pseudocoel pseudocoelomate n a pseudocoelomate organism * * * pseu·do·coel·o·mate (soo″do sēlґo māt) 1. having a pseudocoelom. 2. an animal having a… … Medical dictionary