NCIt definition : A species of nematode in the family Onchocercidae with a smooth cuticle, blunt anterior
and posterior ends, and lacking lips or a buccal capsule. The lifecycle of O. volvulus
involves the black fly as the intermediate host and humans as the definitive host.
This nematode is the causative agent of onchocerciasis (river blindness).;
Alternative definition : CDISC: Any trematode parasite that can be assigned to the species Onchocerca volvulus.;
Currated CISMeF NLP mapping