trematode

Any of numerous flatworms of the class Trematoda, including both external and internal parasites of animal hosts, that have a thick outer cuticle and one or more suckers or hooks for attaching to host tissue.

Same as trematoid.

One of the Trematodea. Also used adjectively.

any of several parasitic flatworms, of the class Trematoda, that have external suckers

parasitic flatworms having external suckers for attaching to a host