platyhelminth
noun
platy·hel·minth ˌpla-ti-ˈhel-ˌmin(t)th 
: flatworm
platyhelminthic
ˌpla-ti-hel-ˈmin(t)-thik
adjective ˌpla-ti-hel-ˈmin-tik
Word History
Etymology
ultimately from Greek platys broad, flat + helminth-, helmis helminth
First Known Use
1877, in the meaning defined above
Medical Definition
platyhelminth
noun
platy·hel·minth ˌplat-i-ˈhel-ˌmin(t)th
: any worm of the phylum Platyhelminthes
called also flatworm