parasite

Term: parasite

Origin: Anc Greek

 παρά- (prefix denoting  “beside”)

+σίτος (=wheat, food) > σείω /sio(=winnow harvested wheat) a person who eats at the table of another

Definition:

Parasite is an organism that grows, feeds, and is reproducted  on or in a different organism (host) and usually it contributes nothing to the survival of its host.