Cooperia

noun

Coo·​pe·​ria kü-ˈpir-ē-ə 

: a genus of small reddish brown nematode worms (family Trichostrongylidae) including several species infesting the small intestine of sheep, goats, and cattle and sometimes held responsible for marked catarrhal inflammation, anemia, and diarrhea

cooperid

ˈküp-ə-rəd 

noun