flatworm

flat·worm

noun \-ˌwərm\

Definition of FLATWORM

:  any of a phylum (Platyhelminthes) of soft-bodied usually much flattened acoelomate worms (as the planarians, flukes, and tapeworms) —called also platyhelminth

First Known Use of FLATWORM

1874

Rhymes with FLATWORM

affirm, bagworm, bloodworm, bookworm, budworm, confirm, cutworm, deworm, dew worm, earthworm, eelworm, glowworm, heartworm, hookworm, hornworm, inchworm, infirm, long-term, lugworm, lungworm, midterm, pinworm, ringworm, roundworm, sandworm, screwworm, short-term, silkworm, tapeworm, webworm, woodworm

flat·worm

noun \ˈflat-ˌwərm\   (Medical Dictionary)

Medical Definition of FLATWORM

: any worm of the phylum Platyhelminthes : platyhelminth; especially : turbellarian

flatworm

noun    (Concise Encyclopedia)

Any of a phylum (Platyhelminthes) of soft-bodied, usually much-flattened worms, including both free-living and parasitic species. Flatworms live in a variety of marine, freshwater, and terrestrial habitats worldwide. They range in length from much less than an inch (a fraction of a millimeter) to 50 ft (15 m) and are of three main types: turbellarians (including the planarian), trematodes (see fluke), and cestodes (see tapeworm). Flatworms are bilaterally symmetrical and lack respiratory, skeletal, and circulatory systems and a body cavity. Turbellarians are mostly free-swimming, but trematodes and cestodes are parasites.

Variants of FLATWORM

flatworm or platyhelminth