par-as-it’-ik In biology, of, or j ertaining to, a parasite; holding ihe position of a parasite. In ornithology, applied to such birds as deposit their eggs in the nests of other birds, to which are left the duties of incubation and care of the young P. Castration, sterility in plant or animal induced by a parasite. P. Disease, one due to the presence of parasites. P. Hemoptysis, hemoptysis associated with cough, due to the presence of a trematode, or fluke, the Distoma ringeri in the bronchial tubes. It is a disease of China, Japan, and Formosa. See Parasites P. Male, applied to the male of certain invertebrates which lives upon, and is nourished by, the female; e.g., the microscopic male of the crustacean Lernaa, which becomes practically a spermatophore, and the diminutive Turbellaria-Xtisx. ciliated male of the vermian Bonellia, which establishes itself upon the sexual organs of the female. P. Plant, a plant deriving its nourishment from another plant or from another organism; a bacterium. P. Twin, an autosite.
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